As the Vietnam War picked up this extra manufacturing step was deleted.
Back then this was considered a cosmetic necessity. For this option you would need to ask for it in the "Comments" section at Check-Out.Īll AR15 / M16 models up to about the mid-1960's had the Flashing removed on the FSB. A2 and Match Detachable Carry Handle Assemblies. Features shell deflector, forward assist housing, and provisions for installing an ejection port cover. Packed in factory box (pictured) This Upper Assembly includes: - Colt manufactured M16A4. A2 profile chrome lined Barrel is marked C MP 5.56 NATO 1/7. Receiver marked with Square forge marking. Includes standard 12' handguards, A2 flash hider, NO carry handle. 750 FSBs, we can special order other variants such as. RO901Colt manufactured M16A4 flat top upper receiver with A2 profile 20 inch barrel. Although we typically only stock F marked. Whether you are doing a clone build or just want a solid backup front sight, we can mount it for you. An A2 would have an integrated carry handle. With rear sight, forward assist and port door. Our A2 front sight FSB installation service can be done to any barrel with a. This serves to make the Bayonet Lug inoperable, yet still look like it is there. Id just do M4 feed ramps, most barrels are cut for M4 feed ramps nowadays and the quality of life improvement you get over the small correctness ding isnt a huge deal breaker in my opinion. The second method is to shave off only the wings of the Lug, leaving a center post still in place. If ordered online, this is what we will deliver to you. Our standard method, as shown in our pictures, is to remove the Lug completely. There are 2 different styles of "Shaved Bayonet Lug": All Rifle models (except 605) had a Bayonet lug as do Carbines with Barrels long enough to attach a Bayonet.
This was the Rule up to about the 1990's - when this practice was stopped and everything came with a Bayonet Lug whether it could use a Bayonet or not. Colt shaved the Bayonete Lug off all models with Barrels too short to attach a Bayonet ( 607, XM177, XM177E1, XM177E2, GAU-5, 605, early Commando models, etc.). Next, choose if you need the Bayonet Lug shaved off or not. Non-F marked is for all carry handle models (AR15, M16, M16A1, M16A2, XM177, early Commando's, etc.) 750 is the size used on most barrels today (since 1984 or so). 625 inches in diameter at the Gas Block location on your barrel (diameter of barrel at the gas hole location) 625 is for "Pencil" profile barrels, measured as. 16' CAR A4 PRE 300 BLACKOUT A4 Flattop Barreled Upper, Bayonet Lug, A2 Flash Suppressor Forged Flattop Upper Receiver - Forged Front Sight Base Match Grade Chrome-Moly 1:8 Twist 300 BLACKOUT Heavy Barrel. To get the right version, you first need to decide which Gas Block size you need (.625 or. Standard Milspec Front Sight Base (FSB or A-Frame) for all fixed carry handle Colt Rifles with fixed Front Sights.