Up to 20% Off AR-15 Uppers & Accessories | Shop Now

Up to 20% Off AR-15 Uppers & Accessories | Shop Now

.300 Blackout Radical Firearms Uppers for AR-15

Readily convert your AR-15 lower to .300 Blackout with a complete upper from Radical Firearms – use your existing mags and hit the range with .30 cal stopping power.

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Radical Firearms 16" .300 Blackout Complete Upper Receiver with M-LOK Handguard - AT3 Tactical

Radical Firearms 16″ .300 Blackout Complete Assembled AR-15 Upper Receiver with M-LOK Handguard