Continued from my June 28th post, I tried out the “AeroE” accuracy load with 52gr @sierra_bullets #matchkings and 27.0gr of #reloder15 with @cciammunition #400smallrifleprimers . I loaded twenty rounds and got started: Rifle One has a #coltm4 lower and @innovativearms #warupper , 16” @rainierarms #ultramatch barrel, 1:8 twist w/ midlength gas, Evo rail, and Enhanced Nitride BCG, a @griffin_armament #recce5mod3 and #tapermountminiflashhider , a @cmctriggers 3.5lb #flattrigger and a @vortexoptics 2.5-10x32 #hslr#ffp scope in a @laruetactical mount. Rifle two had Rainier Arms forged upper and lower receivers, a 16” Ultramatch Mod 2 fluted barrel with 1:7.5 twist with intermediate gas, a @geissele #ssae trigger, a @trijicon #acog#ta11j , a Griffin Armament mini brake with #optimusmicro and a @fortismfg Rev II #mlok rail.
I shot five rounds through Rifle One, adjusted my scope slightly and shot the following ten round group because the first group went well and I wanted to keep the momentum going. Saved the last five rounds for a quick group through rifle two. I will be loading more!! Can’t go wrong with this load or any of these manufacturers!
Colt LE6920 M4 Carbine in 5.56x45 NATO with a Aimpoint Comp M2, LWRC stock and a Knight's Armament forend
A rugged and reliable carbine that has been widely used by police and military around the world since the early 90's with it being lighter weight and more compact compared to the M16 making it easily to use in confined spaces.
The M4 was developed from the CAR-15 and the XM-177 Commando, both being shortened versions of the M16 that was adapted over time due to reliability issues with the shortened gas system and the barrel length seriously effecting ballistics.
Colt began to improve the design in 1984 by combining the best features of the Commando and the M16A2.
The XM4 was given a longer 14.5-inch barrel with the M16A2's 1:7 inch rifle twist, to use the heavier 62-grain M855 rounds. The extended barrel improved the XM4's ballistics, reduced muzzle blast and gave the XM4 the ability to mount a bayonet and the M203 grenade launcher. The XM4 was also given the M16A2's improved rear sight and cartridge deflector, as well as other minor refinements. In May 1991, the XM4 was renamed to the M4, and Colt made a manual. In 1994, the U.S. military officially accepted the M4 into service to replace M16A2s in certain roles. The M4 carbine has also replaced most submachine guns and selected handguns in U.S. military service, as it fires more effective rifle ammunition that offers superior stopping powerand is better able to penetrate modern body armor.
This example has a 16" barrel increasing the velocity and allows for better accuracy, this makes for a great defensive carbine or target rifle.
Manufacture- @coltfirearms @aimpointusa @lwrci @knightarmco
Photo taken by- @firearms_inc_