DD DDM4 300S URG 300BLK 10.3" BLACK CZ Mags Chrome Lined

Chrome Lined

Crafted from USA-sourced certified 416R stainless steel with a striking copper PVD coating

-Each tube is size laser marked for easy reference

Underwood 500 S&W Mag 350gr Xtreme Penetrator ammunition is designed for maximum penetration in hunting and self-defense situations

It features a built-in ARCA rail

DD DDM4 300S URG 300BLK 10.3" BLACK CZ Mags Chrome LinedDANIEL DEFENSE DDM4 300S URG 300BLK 10. 3" BLACK The DDM4 300S AR15 style Upper Receiver Group is designed for those demanding a high performance, short barrel rifle chambered in the versatile 300 Blackout cartridge. Built around a 10. 3 inch barrel, the 300S Upper Receiver Group uses standard 5. 56 bolts and magazines to deliver . 30 caliber projectiles with greater muzzle energy than comparable 5. 56mm platforms. With a wide variety of factory