M4 vs. M4A1 Visual Distinctions - 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 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 ...
M4A1 vs DDM4 V7? - AR15.COM
May 15, 2020 · The M4A1's M4 profile barrel is also pointless given that 1) you probably don't have an M203; and 2) even if you did, the M203 cut is covered by the rail. All of that being said, neither is a bad choice and it's all going to come down to your own personal preference.
Physical differences between M4 and M4A1 - AR15.COM
Dec 20, 2011 · The M4 (with the exception of the first production run)is standard with a flat-top upper. The M4 also is largely equipped with the KAC rail-system, and is/was only produced in 3-round burst, no FA. The M4A1 is only available in FA (no 3-round burst). The primary deciding factor between the two is the 3-round burst vs. FA selector option.
Differences With M4A1 vs M4 SOCOM Barrels - AR15.COM
Jan 1, 2021 · There are a lot of select fire Colts out there marked M4A1 on the lower, but with the lighter M4 profile barrel on the upper. Many refer to the profile of the heavier barrel as a SOCOM barrel, and the lighter barrel as the Government profile.
DD Mk 18 vs M4a1 - AR15.COM
Nov 3, 2022 · I’d go M4A1. More versatile, the projectile is effective at wounding at longer range, and the reliability envelope is more forgiving on the 14.5”. There are plenty of MK18s that run reliably, but it’s right there on the ragged edge compared to …
Difference between M4A1 lower and AR15 lower - AR15.COM
Apr 27, 2009 · Well an M4A1 is a machine gun (full auto), and as such has a few cuts and holes that aren't there on a semi auto receiver. AR15 in current common usage today is taken to mean a semi auto, and as such cannot have the holes for the auto sear. No you cannot legally convert a semi auto into a full auto. Don't do it, don't try it, and don't ask ...
Daniel Defense M4A1 or DDM4 V7(slw) - AR15.COM
Mar 12, 2019 · I have the V7LW (not the SLW) and a M4A1. The light weight barrel and rail on the V7LW negates the softer shooting of a midlength compared to the M4A1 carbine gas system because of the heavier weight of Barrel and rail. Both are excellent rifles. If I’m going Pig hunting I take the V7LW to save on weight carrying it around.
M4 A1 SOCOM vs. gov't profile M4 barrel - AR15.COM
Mar 29, 2008 · What are pros/cons of a M4A1 SOCOM profile barrel vs. the standard gov't profile M4 barrel (besides lighter weight in the gov't)? I've finally decided to go with CMMG for a 14.5" upper with perm phantom 5C1. I've got the CMMG stripped lower with RRA LPK (decided on single stage - better for rapid fire).
AK-12 vs M4 vs M4A1 - AR15.COM
Jun 7, 2021 · The standard M4 experienced a catastrophic barrel failure at 450 rounds. Finally, the M4A1 lasted an amazing 900 rounds before the gas tube failed. The M4A1 was still able to single fire by manually cycling the bolt, which begs the question. How long would it go if it was piston driven vs DI?
M4a1 block 2 vs urgi - AR15.COM
Jun 12, 2021 · The MK16 is 3.1 oz lighter but nearly an inch longer than the M4A1 RIS II. ETA: Each rail section added to the MK16 is an additional 1.0 oz. Posted: 6/13/2021 8:43:16 AM EST
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