RRA LAR-15 A4 is offered in 2 barrel lengths. Both made of chrome moly, the 7" has a 1:9" twist, while the 10.5" has a 1:7" twist. The upper receivers on these pistols are forged and the lower receivers are chambered in .223/5.56. They have a gas block sight base and come with an A2 flash hider. The 7" model features a black aluminum free-float tube handguard and the 10.5" has a black R-4 handguard. Hogue rubber grips round out the weapon.
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