M16a4 upper. M16 RifleFrom Wikipedia, the free encyclopediaM16 is the U.S. military designation for a family of rifles derived from the ArmaLite AR-15 and further developed by Colt. It is an assault rifle which fires NATO standard 5.56 mm ammunition. It has been the primary infantry rifle of the United States military since 1967, is in use by 15 NATO countries, and has been the most produced firearm in its ...

Jun 3, 2020 · 5.56 NATO. Barrel Length: 20in. Barrel Style: Standard. Handguard: KMR-A13. BCM® Bolt Carrier Group: None BCM® Bolt Carrier Group (MPI) (Auto) (included FREE w/ Upper Receiver Group, Special Limited Time Offer) BCM® Charging Handle: None Ambi MK2 Handle (LARGE) +$89.95 Ambi MK2 Handle (MEDIUM) +$89.95 Asym MK2 Handle (LARGE) +$74.95 Asym MK2 ...

M16a4 upper. PSA M16A4 upper with FN chrome lined barrel, toolcraft bcg, PSA charging handle Unknown M16A2 carry handle upper receiver with rear sight. Sold A2 sold $550 for complete upper Delta ring is scratched but everything works perfectly I also have a detachable carry handle I can throw in for another $20

Description. The Aero Precision Stripped Upper Receiver is machined from 7075 aircraft aluminum for superior strength and features a super tough, Type 3 hardcoat anodized finish for excellent wear resistance. Black models available with laser-engraved T-marks and an American flag on the Picatinny rail, or T-Marks only.

Jun 20, 2022 · 3. STAG 15 Retro 20″ Rifle W/ Chrome Phosphate Barrel. Another fantastic civilian clone of the M16A4 is the Stag 15 Retro 20-inch Rifle. Now, Stag doesn’t have any military contracts as far as I’m aware, but that doesn’t mean that they don’t build extremely high-quality and reliable AR-15s …. Capco M16A2 20" Upper 1/7 MP 5.56 Chrome Lined. Used condition. The barrel is marked “P MP 5.56 NATO 1/7” and on the carry handle above the rear sight it is marked “P A” (Capco’s mark). These uppers were manufactured under military contract in the late 1990’s to upgrade the US Coast Guard’s and the US Air Force’s M16a1s to ...

Product Description. TNTE M16A4 Hammer Forged 4150 1/7 Upper. This upper has a FNH Government profile Hammer Forged barrel with a 1/7 RH military twist rate. The FN Hammer Forged barrel is 4150 chrome-moly steel with a chrome lined chamber and bore. It's a 20" long barrel and it also it has a 5.56 NATO chamber.Learn why the M16A4 is the best AR-15 build for accuracy, performance, and versatility. Find out the parts you need to clone the modern musket, from the upper receiver to the stock, and see examples of M16A4 clones.Porsche Orland Park is a stand-alone state of the art center whose staff is certified by Porsche with a background of over 40 years in combined Porsche sales. Porsche … Original, Unfired Colt M16A1 Upper Receiver. Found buried in a Police Dept. Arms room for 50+ years $5,500.00. Add to Cart ... M16A4. Flat Top version of the M16A2 ... Palmetto State Armory offers a great selection of AR-15 upper assemblies. Whether you are a gun enthusiast or a beginner, we have plenty of options from different barrel lengths, calibers, gas systems, handguards, & rails to choose from to help you complete a custom build or upgrade.The MK2 Upper Receiver also retains all USGI components in the assembly and works with all USGI bolt carriers, charging handles, and barrel assemblies. ... M16A3, M16A4, and MK12. Optimized for 18-20" long barrels, this gas system reduces recoil impulse and delivers a smoother operating and more controllable weapon system. Mid (14.5” to 16 ...FN 15 M16A4 Mil Collector Complete UPPER Receiver Assembly 20" 5.56x45MM. SKU: 36320-06; UPC: 845737017354; Model: COMPLETE_UPPERS. In Stock. $1,311.23. Make Offer. Pay over time with Learn more. Quantity on Hand: 2. Add to Cart Email for Price Add to Wishlist FFL Required. How to Buy a Gun Online.Add to Cart. AR15 Complete Upper, 16" 5.56 Mid-Length Barrel w/ Pinned FSB, M4 Handguard (Includes BCG & CH) $640.00. Add to Cart. Details. Our M16A4 Clone Complete Lower Receiver features custom engraving on our AR15 Gen 2 Lower Receiver and is the perfect complete lower for your M16A4 clone build.BCM makes an M16A4 upper. Finding a lower with an A2 fixed stock might take some work, modifying an M4, or buying a stripped lower and building up. ... P220R ST - P220R-22-BAS-SAO + 5" Match Upper - P220R Carry - P220R SSS - P220R w/ST Slide - P220R - P225A1 Classic Carry - P225A1 Classic - P226 KA Proofed - 9mm - P226 KB …Specs: Upper: Cardinal, Performance Forge or Anchor Harvey Forged upper with M4 ramps. Barrel: 20" M16A4 FNH Button Rifled 1/7 5.56 with chrome lining. Gas System: …

Watch latest videos, sometimes even early releases! Sign up for the newsletter: http://eepurl.com/hkbJYn [or] slateblackindustries (dot) com 👉 NewsletterOne...What sets this upper receiver apart is its commitment to authenticity. Unlike many off-the-shelf M4 uppers, the BROWNELLS BRN 16A4 20″ Upper Receiver stays true to the original A4 design by omitting M4 feed ramps. This attention to detail ensures a genuine shooting experience, reminiscent of the classic M16A4.HazeGrayJeep. 1945 posts · Joined 2017. #3 · Aug 23, 2017. My M16A4 clone is an old Bushmaster (2000) rifle with a 20" HBAR. Only upgrades I did were the HBAR over Government profile, and a Rock River National Match Trigger. I bought the Knight M5 RAS and a Trijicon TA31 Marine RCO for the optic.

Unleash the full potential of your M16clone build with Charlie's Mil-Spec Rifle RAS, a product identical to the Knights Armament KAC M5 Rifle RAS Forend Assembly. This drop-in replacement part comes complete with four 11-rib RAS rail covers, two 5-rib rail covers, and one 6-rib rail cover. Developed for use on the US military’s M16A4, this ...

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Posted: 4/8/2019 5:30:58 PM EDT. Ohio Ordnance Works is currently offering surplus Sabre Defense M16A4 Uppers, NOS: Sabre Defense M16A4 Upper NOS. $515 doesn't seem like a bad price for new-old-stock considering how uncommon they are, and that they include a cold hammer forged FN barrel, M5 RAS, rail covers and a Matech BUIS.Palmetto State Armory offers a great selection of AR-15 upper assemblies. Whether you are a gun enthusiast or a beginner, we have plenty of options from different barrel lengths, calibers, gas systems, handguards, & rails to choose from to help you complete a custom build or upgrade.Colt developed the M16A4 in the mid-1990s for the Marines, generally using a 20-inch 1:7 barrel with a flat-top MIL-STD-1913 receiver and a handguard with an M5 Adapter Rail System. ... With the M4 upper, you get the whole package: forward assist, brass deflector, flat-top with a Pic rail, and a feed ramp extension that helps with …16'' M4 Custom Upper. Upper assembly comes completely head spaced and test fired. Ready to drop onto a complete lower receiver. Other selections are available for upper, bolt and carrier, charging handle, handguards, flash hiders, and gas blocks. Barrel customizations are also available. Please choose from the options listed.

Mar 15, 2022 ... Aero Precision M16A4 review. Aero precision build parts and shooting. The Aero M16 Clone lower. M16 Clone upper for sale!This AR15 Complete Upper is the same upper receiver used in our AERO M16A4 Special Edition Complete Rifle and features a 20″ 5.56 Barrel w/ Pinned FSB, A2 Handguard and A2 Detachable Carry Handle. Upper …Description: Aero Precision Limited Edition M16A4 Rifle is a copy of the US Military issued M16A4 minus the full-auto capability. Machined with a low shelf this lower is perfect for use with a RDIAS (Registered Drop In Auto Sear). Upper Receiver: Standard M4 Upper with removable carry handle. Barrel: 20" 5.56 NATO, Rifle Length, 1:7 Twist, 4150 ...SOLD - $995.00. Shipping: Calculated on checkout (or Arrange local transfer) Accepted Payment Methods: Returns: 3 Days. Description: FREE SHIPPING! Colt M16A4 new complete flat-top upper with removable carry handle with A2 sights, 20" 1-7 govt. profile barrel, A2 flashhider, bayo lug, forward asst., shell deflector, complete upper with FA ...M16 RifleFrom Wikipedia, the free encyclopediaM16 is the U.S. military designation for a family of rifles derived from the ArmaLite AR-15 and further developed by Colt. It is an assault rifle which fires NATO standard 5.56 mm ammunition. It has been the primary infantry rifle of the United States military since 1967, is in use by 15 NATO …Colt M16-A4 Description. Known for its reliability, the Colt M16-A4 Semi Auto Rifles are great for hunting and target shooting.The Colt M16A4 Rifle is the fourth generation of the M16 series weapon system, and is the world standard by which all other weapons of this class are judged. With a removable carrying handle and an integral rail ...16'' M4 Custom Upper. Upper assembly comes completely head spaced and test fired. Ready to drop onto a complete lower receiver. Other selections are available for upper, bolt and carrier, charging handle, handguards, flash hiders, and gas blocks. Barrel customizations are also available. Please choose from the options listed.M16A4. (No reviews yet) Write a Review. $799.00. Description. Flat Top version of the M16A2. Served in the second Gult War. * If you want the original Fixed Carry Handle version (Here) * The shorter M4A1 Carbine (Here) * Can be ordered with or without a Charging Handle 7075 (Made in USA) and BCG.The difference between Upper and Lower Egypt is social, cultural and geographical. Lower Egypt is mainly made up of the Nile Delta, while Upper Egypt is the country further south. ...11 models Aero Precision M4E1 16in Threaded 5.56x45mm Complete Upper Receiver with Flash Hider (11) As Low As (Save Up to 15%) $420.74 Up to 20% Coupon. Aero Precision M4E1-T 16in .223 Wylde Fluted Barrel Complete Upper Receiver with Flash Hider $730.00 (Save 10%) $654.99 10% Coupon.BCM makes an M16A4 upper. Finding a lower with an A2 fixed stock might take some work, modifying an M4, or buying a stripped lower and building up. ... P220R ST - P220R-22-BAS-SAO + 5" Match Upper - P220R Carry - P220R SSS - P220R w/ST Slide - P220R - P225A1 Classic Carry - P225A1 Classic - P226 KA Proofed - 9mm - P226 KB …The FN 15® Military Collector Series M16 upper receiver assembly is an authentic reproduction of the original, made to FN’s and the U.S. military’s exacting specifications. A 20-inch, 1:7 RH, button-broached barrel is chrome-lined and chambered in 5.56x45mm NATO.Description: Aero Precision Limited Edition M16A4 Rifle is a copy of the US Military issued M16A4 minus the full-auto capability. Machined with a low shelf this lower is perfect for use with a RDIAS (Registered Drop In Auto Sear). Upper Receiver: Standard M4 Upper with removable carry handle. Barrel: 20" 5.56 NATO, Rifle Length, 1:7 Twist, 4150 ...M16A4; M16A4. Show. per page. Showing 1-9 of 13 Items . Out of stock. Buttstock Swivel Machine Screw M16A4 AR15 / M16 . Firearm Mfgr: AR15 / M16 ...Markings include: Property of U.S.A., MOD M16A4, CAL. 5.56MM; Serial number designation; Safe/Semi/Burst safety selector markings; Gen 2 Lower Receiver Features: Upper Tension Screw – Allows users to fine tune the fit of the upper and lower receiver through the use of a nylon tipped tensioning set screw inserted in the grip tang …AR15 Carbine single lined handguard AR502. $14.95. AR15 Carbine double lined handguard AR501. $19.95. AR15 Flat Top Upper in the White AR500 Flat top Upper in the White.Perfect for applying your own custom finish. 100% machined. $45.00. AR15 9mm Bolt Assy AR499 Complete bolt with all parts made by Windham Weaponry. $99.00.AR15 Carbine single lined handguard AR502. $14.95. AR15 Carbine double lined handguard AR501. $19.95. AR15 Flat Top Upper in the White AR500 Flat top Upper in the White.Perfect for applying your own custom finish. 100% machined. $45.00. AR15 9mm Bolt Assy AR499 Complete bolt with all parts made by Windham Weaponry. $99.00.

Jan 29, 2018 ... Following the M16 build I did for the Tokyo Marui M4 MWS, I soon realised that these parts also fitted the GHK M4.The Upper East Side of Manhattan is a vibrant and bustling neighborhood known for its luxury residences, upscale shopping, and world-class museums. However, one aspect that can dam...[ARCHIVED THREAD] - Drop-in quad rail handguard suggestions for M16A4-ish rifle, where to buy, international shipping. ARCHIVED; Posted: 1/23/2021 9:23:14 PM EDT Hello guys! I'm pretty new to the AR world since this kind of firearms were allowed for civilian use in my country not long ago and, as soon as I could, I asked for an import …Oct 26, 2023 · This is another name brand rifle gas length M16 upper from COLT. Colt parts are rare these days, and this is the same M16 Upper Receiver used on military's M16A2 and M16A4 rifles. Government profile heavy barrel and feature a chrome lined bore and chamber, along with a 1-7 twist. The upper comes with Magpul MOE handguard. In all reality a true M16A4 for this period would have the rear flip up and a Trijicon TA31RCO ACOG, not the carry handle. Not sure what period you mean, but my M16A4 in 2015 rocked an M68 CCO. In 2014 I had an M16A2 with the "gooseneck" adapter on the carry handle, also with the Aimpoint.Cage code upper, 20” C MP 1/7. Very low round count: Sub 100 Shipped TYD $415! No trades at this time. PayPal F&F or you pay fees G&S. Can discuss other methods of payment if needed. Dibs gets it. ... [WTS] Colt m16A4 Upper with KAC M5 RAS. Cage coded rape whistle included!

FN M16A4 factory original uppers, Charging Handle and BCG not included. These are in NOS condition with some minor handling marks. The upper includes an original FN USGI Mil Spec chrome lined 20″ cage coded barrel with 1/7 twist, a P&S Products Co. M5 RAS Picatinny hand guard assembly with rail covers and a USGI cage code marked MaTech 600 ...blueprint-upper-receiver-m16a4 - Free download as PDF File (.pdf), Text File (.txt) or view presentation slides online. The document contains technical drawings with multiple views and details of a mechanical part. Dimensions and tolerances are provided for various features. Drawing views include front, side, and section views with different ...If you’re like me and just looking for a inspired build, I’m going with a PSA premium m16 upper, and putting a Midwest industries drop in rifle length quad rail, matched up with the PSA m16a4 gov marked lower and bcm m16 buffer system. I don’t suggest psa lpk, or bcg. The barrel on a psa premium is chf from FN so it’s g2g.This upper is new production from FN's Military Collector Series. The FN 15® Military Collector Series M16 is a military replica rifle made to FN’s exacting specifications. The semi-automatic rifle is chambered in 5.56x45mm NATO and features a 20-inch, 1:7″ RH, button-broached, and chrome-lined barrel. Specifications: Barrel Length: 20″.M16 internal piston action system. The M16 is a lightweight, 5.56 mm, air-cooled, gas-operated, magazine -fed assault rifle, with a rotating bolt. The M16's receivers are made of 7075 aluminum alloy, its barrel, bolt, and …Home. Rifles. Auto Loading. US Military Arms. U.S. M16. Items 1 - 64 of 369. Sort By. 1907 Leather Sling w/Brass Hardware, *NEW* Rating: $24.00. Add to Cart. 1907 Leather … PSA 20" A2 Rifle Length 5.56 NATO 1:7 Nitride Freedom Upper With Carry Handle Assembly W/ BCG and CH. Barrel Length: 20" Gas System: Rifle Length Barrel Profile: A2 Style Barrel Steel: 4150V Chrome Moly Vanadium Barrel Finish: Nitride Chrome Lining: None Muzzle Thread: 1/2-28 Chamber: 5.56 NATO Twist Rate: 1 in 7" Barrel Extension: M4 Colt M16A4 Upper Assembly, 20" long 1/7 twist chrome lined barrel, bolt & carrier assembly, Magpul MOE Handguard, 5.56X45 NATO *NEW* Sold Individually.Colt manufactured M16A4 flat top upper receiver with A2 profile 20 inch barrel.A2 profile chrome lined Barrel is marked C MP 5.56 NATO 1/7.Packed in factory box (pictured) This Upper Assembly …with receiver hardware. for sale is an FN upper receiver, with a forged "F" mark. M4 marked at gas tube entrance. M4 feed-ramps. T-marks engraved, but not painted. This is something not often seen. Also, the quality of the finish is a work of art. No imperfections normally found on forged uppers. This is a perfect upper for a military clone build.M16 RifleFrom Wikipedia, the free encyclopediaM16 is the U.S. military designation for a family of rifles derived from the ArmaLite AR-15 and further developed by Colt. It is an assault rifle which fires NATO standard 5.56 mm ammunition. It has been the primary infantry rifle of the United States military since 1967, is in use by 15 NATO …Use the upper and whatever you need stock wise off the lower and sell the rest of the lower. You will also get a carry handle with it as well. If you want a factory rifle then go w/ the Colt AR15A4. If you want to build one then go w/ the PSA 20" CHF upper and then build your lower.Jun 2, 2020 · M16 RifleFrom Wikipedia, the free encyclopediaM16 is the U.S. military designation for a family of rifles derived from the ArmaLite AR-15 and further developed by Colt. It is an assault rifle which fires NATO standard 5.56 mm ammunition. It has been the primary infantry rifle of the United States military since 1967, is in use by 15 NATO countries, and has been the most produced firearm in its ... SOLD -#3) FN - M16A4 Upper Half KAC M5 - Cage Code Barrel 3S679 Complete ((( SOLD & shipped other site ))) NO OFFER's / ANY QUESTION's IN PM Only / Post - I'll take it / PM right away to confirm it is for you / FN 15 M16A4 Mil Collector Complete UPPER Receiver Assembly 20' 5.56x45MM Thoroughbred has legit M16 uppers without the M4 feed ramps. Edit to clarify: stripped uppers, specifically. DS Arms makes a m16a4 upper with the button rifled FN barrel, and mine at least came with their dog bone m4 marked upper receiver. From what I understand they have been providing these to the military as replacement receivers for years.Original, Unfired Colt M16A1 Upper Receiver. Found buried in a Police Dept. Arms room for 50+ years $5,500.00. Add to Cart ... M16A4. Flat Top version of the M16A2 ...The Colt's number for a M4 upper is 63264, and a M16A4 is 64986. The difference between the M16A4 upper and the M4 barrel is the feed ramps, and the M4 upper is identified with a "4" or "M4" stamping. Receiver height is the same. Colt's also states that their 6700 series uses upper receiver 64986, and that the 6721 uses 63264. PSA 16" CHF 1:7 M4 Carbine 5.56 NATO Premium Classic AR-15 Upper Assembly - No BCG/CH. Barrel length 16" Cold Hammer Forged Barrel Machine Gun Steel 5.56 Nato Chamber 1 in 7" twist Carbine Length High pressure tested Magnetic particle inspected M4 feedramps Forged, flat top upper blueprint-upper-receiver-m16a4 - Free download as PDF File (.pdf), Text File (.txt) or view presentation slides online. The document contains technical drawings with multiple views and details of a mechanical part. Dimensions and tolerances are provided for various features. Drawing views include front, side, and section views with different ...

Specifications: Aero Precision M16A4 Rifle Caliber – .223, 5.56 NATO Operation – Direct Impingement Capacity – 5 to 150 rounds Barrel Length – 20 inches Overall Length – 39.63 inches Sights – M16A4 carry handle and Fixed Front Twist Rate – 1:7 Weight – 7 lbs 8 ounces MSRP – Upper $450 Lower $250

So, that left me torn between Knight’s Armament M5 RAS Handguard and the Magpul MOE M-LOK Handguard. Knight’s RAS rail is, without a doubt, the best quad rail for the rifle variant of the AR-15. The only downside is the weight and cost of the unit. Knight's Armament M5 RAS Handguard. $310.

Del-Ton AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 1 in 9" Twist 20" Government Contour Barrel. $399.99. Add to Cart. Geissele AR-15 Super Duty MOD1 Upper Receiver Assembly 5.56x45mm 16" Cold Hammer Forged Barrel M-LOK Black. $1260.00.Looking for a surplus or clone m16a4 upper minus bcg and ch. Possibly an m16a2 upper- preferably NOS, FN or Colt. Cloning the rifle I served with, thank you. Parts are very welcomed also. ... I was lucky enough to find my A4 upper from some random seller at my local gun show years back. The only thing missing was the front aiming piece.Jan 31, 2024 · It is equipped with an upper receiver, a removable carrying handle, a built-in full-length Picatinny rail for mounting optics and other ancillary devices, and a MIL-STD-1913 “Picatinny railed” flat-top upper receiver. The M16A4 has adjustable rear aperture sights integrated into the Picatinny rail-mounted carry handle assembly, reaching up ... Capco M16A2 20" Upper 1/7 MP 5.56 Chrome Lined. Used condition. The barrel is marked “P MP 5.56 NATO 1/7” and on the carry handle above the rear sight it is marked “P A” (Capco’s mark). These uppers were manufactured under military contract in the late 1990’s to upgrade the US Coast Guard’s and the US Air Force’s M16a1s to ... Colt M16A4 Upper Assembly, 20" long 1/7 twist chrome lined barrel, 5.56X45 NATO *NEW* Sold Individually.RO901Colt manufactured M16A4 flat top upper receiver with A2 profile 20 inch barrel.Packed in factory box (pictured) This Upper Assembly includes:- Colt manufactured M16A4 type flat top upper, case deflector and forward assist assembly.- A2 style birdcage flash hider.- 1/2x28 muzzle ... Unleash the full potential of your M16clone build with Charlie's Mil-Spec Rifle RAS, a product identical to the Knights Armament KAC M5 Rifle RAS Forend Assembly. This drop-in replacement part comes complete with four 11-rib RAS rail covers, two 5-rib rail covers, and one 6-rib rail cover. Developed for use on the US military’s M16A4, this ... Upper receivers and Parts, A-1, A-2, A-3, A-4, 9mm, and tactical Hi Rise upper receivers. Upper receiver parts for the AR-15_M-16 Rifle. Parts include, charging handles, tactical latches, two finger tac latch, ambi tac latch, and more. Comon manufacturers are Badger, and PRI Precision Reflex Inc.Oct 30, 2022 ... Bear Creek Arsenal Code 704tactical for 5% Off BC-15 | 5.56 NATO Upper ... Old School Cool (20" BCA Upper) ... M16A4 Overview | A Clone of a Very ...

peggy nadelllogicno hrdeepwoken raceencore venture in M16a4 upper accuweather columbus [email protected] & Mobile Support 1-888-750-3809 Domestic Sales 1-800-221-8434 International Sales 1-800-241-3358 Packages 1-800-800-4200 Representatives 1-800-323-2791 Assistance 1-404-209-9221. PSA 20" A2 Rifle Length 5.56 NATO 1:7 Nitride Freedom Upper With Carry Handle Assembly W/ BCG and CH. Barrel Length: 20" Gas System: Rifle Length Barrel Profile: A2 Style Barrel Steel: 4150V Chrome Moly Vanadium Barrel Finish: Nitride Chrome Lining: None Muzzle Thread: 1/2-28 Chamber: 5.56 NATO Twist Rate: 1 in 7" Barrel Extension: M4. hourly weather san ramon ca 5.56 20" A4 Rifle length Upper 1/7. This 20" Rifle Barreled Upper Assembly is for your BCG, Charging Handle, and Lower- just add the Rear Sight or Optic of your choice to the machined Picatinny Rail of the Receiver and your kit is complete. This highly accurate 1/7” Ballistic Advantage A2 Profile Barrel is QPQ finished and machined from 4150 ...The M16A4 is the primary rifle of the United States Marine Corps and is in use in select Army units. While most U.S. Special Operations Forces tend to favor its smaller cousin, the M4A1, or other 5.56mm carbines over the … eat n park bridgeville pabayada erie pa Upper left side back pain can be caused by acute pancreatitis, Healthline says. Although the pain manifests mostly in the upper left side of the abdomen, it can spread to the left ... south carolina thrift storesgecko geico voice New Customers Can Take an Extra 30% off. There are a wide variety of options. Latin is one of the most widely used writing systems in the world. It has evolved over centuries, and one of its key features is the distinction between lower case and upper case l...In all reality a true M16A4 for this period would have the rear flip up and a Trijicon TA31RCO ACOG, not the carry handle. Not sure what period you mean, but my M16A4 in 2015 rocked an M68 CCO. In 2014 I had an M16A2 with the "gooseneck" adapter on the carry handle, also with the Aimpoint.The result looks like an M16A4 that someone chopped the last 4 inches of the barrel, threaded the new muzzle, and attached the A2 flash hider to the stump. ... The A4-style flattop upper ships ...