May 29, 2019 · The side sling mount was originally not even for the XM4/M4 program, but actually a sling adapter used with the M203, which got standardized on the M4 and M4A1 and was an option on R0777 and R0977s.

Dec 23, 2014 · He was also shown the XM4 with M203 attached at a Virginia training facility by Navy SEALs - they had the same XM4 markings. He still has a color photo of himself firing the XM4 with M203 underneath at a USMC marksmanship firing range at Dam Neck base in 1986-7.

May 24, 2015 · The Colt model R0720 (XM4) is listed as having a 14.5" "A2" profile barrel; "Burst" fire control; an "A2 with M203" upper receiver; A2 front and rear sights; and M4 hand guards. Stocks for both models are listed as "Sliding", though it is known that the early XM4 utilized an N1-style fiber-lite stock on a 4-position receiver extension.

Aug 6, 2023 · After some searching and coming up short looking for the correct M16A2 Carbine M203 barrel, I decided to look for an early C MP marked M4 carbine barrel instead. I figured the angle of the ramps would be different, but no big deal.

Jan 9, 2024 · Basically a Colt XM4 Carbine/R0727 with an attached M203 40x46mm grenade launcher.

Dec 22, 2021 · Simply put, the difference between the two is the M4 has either a full-auto or burst fire mode while the AR-15 does not. There are also minor differences such as barrel length and attachments, but these do not fundamentally affect the rifle.

Colt has been the most visible producer of ArmaLite AR-15 pattern weapons, and the military designations M16 and M4 are heavily associated with the company. Colt has an intricate internal nomenclature system for its models, with a variety of suffixes and prefixes.

Dec 12, 2024 · Oval fat handguard. A real XM4 photo from US National Archives for your reference. The description said M16A2, but you can see the barrel profile (skinny at where FSB front end of the barrel before M203 cutout) was definitely a XM4.

Sep 29, 2023 · An M4 carbine equipped with an M203 grenade launcher and an Aimpoint CompM2 red dot sight. After development of the XM4 was considered to be completed in 1987, the Marine Corps was the first to approve and adopt the carbine’s use (although in …

Jul 1, 2006 · This troop in Iraq is equipped with an M4 carbine, M203 grenade launcher, Trijicon ACOG Optical sight, Knight’s Armament Company RAS (Rail Adapter System) flashlight and a AN/PEQ 2 infrared illuminator.