2020年2月17日 · The Colt Federal Patrol Carbine is an advanced rifle based on Colt's legendary M4 platform adding key accessories as requested by the FBI. It features a new Geissele MK4 M-LOK® capable free-floated forend, and a set of Magpul PRO flip-up sights.

2010年4月5日 · These examples are Colt, RRA (which are close replicas) and an unknown brand. Captions are below the picture. Green - Colt's will have six holes. Red - Colt holes are tapered. RRA's are tapered also. The unknown brand is vertical. Purple - The Colt lines are thin and clear. RRA's are thin, not as clear cut and the unknown brand has clear, but ...

2022年1月16日 · The Sporter M4 Carbine was the first change to the roll marking of the original Colt's Law Enforcement Carbine. I got mine new in March 2011, no date on plastic birth bag, barrel date 12/10 and from the Colt site info lookup it was made in the year 2011.

2008年9月7日 · The USGI M4 Carbine is Colt's model number RO920 and roll marked: Property of US Govt M4 Carbine The USGI M4A1 is marked: Property of US Govt M4A1 Carbine and is model number RO921. On the commercial side, the RO977 is the commercial and export version of the M4, and can be had in safe-semi-auto, and rollmarked M4 Carbine. M4 and M4A1 are USGI ...

2023年10月26日 · Colt in fact DID dramatically change the design for the bolt in the CK901, as it is based on a CM901 carrier and bolt (.308/6.5) not an AR-15/M4 carrier/bolt. The recent production military contract Colt CK901 (Yemeni contract) is neither what you own, nor what the OP is talking about.

2018年2月26日 · I’m sure this has been touched upon many times but here goes. Saw recently a pretty good sale on a Colt 6920 M4 LE Carbine. Sale price is 799 and some other sites have it for $759. Question I have is there is sooo many variations out there that’s it’s very confusing! Trying to decide which variation is worth the investment and which is not.

2006年5月29日 · 600 and 700 series Colt Carbine 2 position receiver extension on bottom, M4/A1 four position receiver extension at top: 600 and 700 series Colt Carbine castle nut on left, M4/A1 castle nut on right: Top, 600 series aluminum Colt Carbine buttstock, used from about 1967 until the mid 1980's. Middle, buttstock used from the mid 1980's up through 2002.

2021年2月24日 · Colt M4 Carbine Federal Patrol Rifle - $1,499.00 Wish I had the funds for one of these right now. I'd be curious to see what rollmark it has, if it's been updated to the new style.

2010年6月13日 · So 95% of the time M855 ammo is capable of grouping within a 1.7" circle at 100 yards while the M4 only has to demonstrate enough accuracy to hit within a 5.24" circle at 100 yards when shooting M855 ammo. And at best, M855 is no where near 1 MOA accuracy, but it is far more accurate than the very mediocre milspec for the M4.

2013年9月8日 · July: AMCCOM awards a $8,256,003 contract to Colt for ~18,000 M4 carbines. AMCCOM also awards a $153,102 contract modification related to the M4 carbine. The US Army officially adopts the M4 and M4A1 Carbines. Only the first lot of M4 will be delivered with fixed carrying handles.