TG36CPFDE IN .300 BLK OUT This is our standard Pistol with a 9.4" .300 Blackout barrel, Black nitride coated 1in8 twist threaded in the standard 5/8x24 thread pitch. These come with one Magpul .300 Blackout Mag and our AR magwell, Standard C handgaurd with the 3 piece rail kit and sling loop. These are compatible with our braces and G36 stocks if you choose to SBR it.