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A1 upper with or without M4 feed ramps - AR15. COM 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 about needing an upper with them So thinking I should probably stick with M4 ramps on the upper All advice welcomed I know Luth and Brownells makes one, but are there others?
Official M4A1 USASOC URG-I and NSW URG-I and Clone Picture and . . . Quote History Originally Posted By joglee: Official part list Geissele Mk16 Geissele ACH DD 14 5" MID-LENGTH CHF BARREL DD MK12 gas block Surefire SF4P Standard M16 M4 BCG Standard M4 receiver Standard M4A1 lower with H2 buffer SOPMOD stock Will be interesting to see who's receiver and BCG the URG is initially issued with
Need M4 feedramps cut in a A1 upper - AR15. COM FYI, a M4 extension will work just fine in a receiver not cut for the extension The only problem is when you run an extension with out M4 ramps in a receiver with M4 ramps cut into it This creates a lip where the noses of bullets can catch
Army M4 qualification tips gt; General Discussion gt; AR15. COM 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 200yds, your bullet is 11" high so you want to be a little low when zeroing otherwise you may shoot over the top of the 175-200m target HTH Good Luck qualifying!
M4 vs. M4A1 Visual Distinctions gt; AR Discussions gt; AR15. COM Can anyone report how a Colt M4 is marked vs a Colt M4A1 in US service? For example, on the fire selector, I do know the M4A1 is marked "SAFE-SEMI-AUTO" but is the M4 marked "SAFE-SEMI-BURST"? (reflecting of course the primary difference between the two being the full auto vs 3-round burst capability) Also, on the left magazine housing on the lower receiver, does Colt mark them "M4 CARBINE
War Hammer Armaments Super Safety (3-Position) Active Trigger System The War Hammer Armaments Super Safety (WHA-SS) is a revolutionary 3-position trigger system, offering Safe, Normal Fire, and Active Fire modes In Active Fire mode, the system actively resets the trigger, significantly increasing the rate at which you can pull the trigger—operati
Colt 723 727 XM4 tribute builds gt; A2 Builds gt; AR15. COM Next is a 727 build, all Colt, built on an LE trade LE 6520 carbine that I swapped parts out on Includes a C MP marked 14 5 M4 barrel assembly, Colt FA C-stamped BCG, Colt charging handle, 4-position Colt RE, Colt Fiberlite N1 stock, Colt grip, old Colt double heat shield M4 handguards, Colt A1 A2 side sling mount, and Colt A2 FH (pinned with a spacer to 16+") More or less an XM-4 early M4