The Rock River Arms LAR-15M CAR A4 is a tactical carbine built on forged 7075-T6 aluminum receivers with a hard coat anodized finish. At its core, this carbine features a chrome moly barrel with a 1:9 twist rate, chrome-lined bore and chamber, and an A2 flash suppressor. The rifle comes standard with RRA's two-stage trigger system (4.5-5lb pull), low profile gas block, CAR-length handguard, and a full-length Picatinny top rail for optics mounting. The carbine is equipped with a six-position tactical CAR stock, standard A2 pistol grip, chrome bolt carrier group, and standard charging handle. It features a carbine-length gas system, traditional front sight base, and comes chambered in 5.56 NATO/.223 Remington with a 16-inch barrel length for civilian compliance. Each rifle includes one 30-round magazine where legally permitted and comes with Rock River Arms' warranty. The CAR A4 model maintains compatibility with standard AR-15 components and accessories while offering RRA's proven reliability and performance.