6920 roll marks through the years > Colt > AR15.COM
Jan 16, 2022 · 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, …
Comparing Colt Carbine Handguards - Big Pictures - AR15.COM
Apr 5, 2010 · Do the dual heat shielded Colt carbine handguards have the same characteristics as the single shielded ones as described? Yes, this a very good write up by the OP! Edit: I …
Timeline of changes to Colt lowers? > Colt > AR15.COM
Sep 25, 2023 · Then Colt switched all their lowers at some point to started using standard size trigger prins (0.154"). Sometime after they changed to the rollmark on the 6920's to "M4 …
Colt military Carbine parts variation guide 1971-current Edition I > …
May 29, 2006 · Left, M4 feed ramp used on the M4/M4A1. Middle, extended 700 series Carbine feed ramps. These are shallower then the feed ramps used on the M4/M4A1, date back to at …
XM4 Clone/Information thread > A2 Builds > AR15.COM
May 29, 2019 · 1-"M-16A2 carbine" 727 . "COTS" carbine 2-"XM4" with CM upper, "Property of US Govt marked, UNIQUE barrel profile. 3- "M4" with carry handle. Mythical "USGI" piece that …
[ARCHIVED THREAD] - My New Colt SP6920 Sporter M4 Carbine …
Mar 17, 2011 · My latest new carbine is my 10th Colt AR which started with my first SP1 rifle way back in 1971, I currently have 4 ponies in my stable, a Match Target HBAR lower with USGI …
M4 vs. M4A1 Visual Distinctions > AR Discussions > AR15.COM
Sep 7, 2008 · 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 …
Early M4 Configuration (s) and Unusual M16-Derived Carbines in …
Jul 15, 2022 · If you were issued, or encountered, early versions of the M4 in your military service, I have some questions.Referencing this promotional video, what was your experience with the …
Rail system for colt m4 6920 carbine - AR15.COM
Apr 19, 2015 · So I love my new Colt 6920 M4 carbine that I recently bought. Last weekend I had the chance to get the iron sights zeroed and shoot it for the first time. One weak point on the …
Colt M4 Carbine Federal Patrol Rifle SKU: LE6920-FBP2 - AR15.COM
Feb 17, 2020 · Some of you may recall the previous FBI specification rifles that made it onto the civilian market as the LE6920-FBP1. There is now a specification rifle that has come onto the …