Every 204 RUGER Upper we sell can be configured to your specifications. Customize your .204 RUGER Complete Upper with an optic, muzzle device, rail, bolt carrier group, magazine, or charging handle from our matched selection. Your 204 RUGER AR 15 Upper Receiver will arrive turn-key and ready to shoot out of the box.

204 RUGER offers the second highest muzzle velocity (4200fps) available on the AR15 platform. The .204 RUGER cartridge is very accurate and efficient, producing consistent 1/2 MOA groups at 100 yards, and a 270 yard point blank range. The small caliber, light projectile, and low recoil make the 204 RUGER an ideal varmint round.

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