.458 SOCOM AR-15 Rifles

.458 SOCOM AR-15 Rifles

Shop .458 SOCOM AR-15 rifles in complete and custom big-bore configurations at Moriarti Armaments. The .458 SOCOM brings heavy-projectile capability to the AR-15 platform while retaining familiar AR-style dimensions and modularity. Browse custom .458 SOCOM rifles in available barrel lengths, handguards, muzzle devices, furniture, colors, and finishes. Compare complete rifles by barrel specifications, gas system, magazine compatibility, included components, and individual features to find a .458 SOCOM AR-15 configured around your preferences.

What is the advantage of .458 SOCOM in an AR-15 rifle?

.458 SOCOM provides a big-bore cartridge option within the AR-15 platform, allowing shooters to use heavy .458-caliber projectiles without moving to a larger AR-10-style firearm. Compared with smaller AR-15 cartridges, .458 SOCOM emphasizes projectile diameter and mass rather than high velocity. A .458 SOCOM rifle requires caliber-compatible components, and ammunition, magazine, and firearm specifications should always be matched to the individual configuration.