May 1, 2008 · When zeroing the M4 at 25m, set the BDC to 6/3 +2. Make all your elevation changes on the front sight so the BDC will work. Center your group in the lower half of the center bullseye. At …

Jan 7, 2026 · Is the M4 carbine a “retro” configuration now (Page 1 of 2) Previous Page / 2 Next Page

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Dec 10, 2023 · Just wondering what aftermarket triggers you guys have used?Doing some research, resulted in very limited info. Some guy on rimfire site reported that the SSA-E didn’t work because …

Jun 11, 2025 · A1 upper with or without M4 feed ramps - is it necessary? 1st retro build, and all my other upper receivers have had M4 feed ramps. My build is based of a Carbine. I have read mixed reviews …

Jun 8, 2023 · [ARCHIVED THREAD] - Best Benelli M4 Bolt release 6/8/2023 1:00:06 PM EST ... 6/8/2023 2:58:23 PM EST [#1]

Apr 23, 2020 · Hi, i am a bit confused on this subject. I am on the market for a USGI silent sling for my M4 build and i just found out that there is a longer silent sling for the M4 and a shorter one for the M16 ri

Mar 26, 2014 · The issue is they are claiming the value PER click is the same from the M16A2/4 to the M4 At 100 meters, 1 click elevation = 1 1/2" (or 3.5cm) point of impact shift on target.

Dec 20, 2011 · M4 = fixed carry handle, round double heat shield handguards, can be had with burst or full auto settings M4A1= flat top, standard with KAC-RAS picatinny railed aluminum handguards, …