Radical Firearms 10.5 in. 12.7×42 (.936) Upper Assembly

Introducing Radical Firearms 12.7×42 Complete Upper. After a year of development, a few thousand rounds, and a pretty sore shoulder, we feel this is absolutely one of the best uppers we ever offered… This provides a high-quality upper for those looking for more POWER out of their rifle. Comes complete and assembled with Upper Receiver, Forward Assist, Custom Ejection Port Door, Barrel Nut. 10.5 inch 12.7×42 Barrel and our new Panzer Muzzle Brake to take the bite out of the round. Bolt Carrier Group and Charging Handle come complete with this upper. Does not include dust cover. 10.5 inch 12.7 x 42 4150 Vanadium Steel Barrel. 1 in 20 inch Twist Rate. 49/64×20 TPI. 12.7 x 42 Chamber. HPT/MPI. M4 Feed Ramps. Low Profile .936 inch Micro Gas Block. Stainless carbine-length gas tube. Direct Gas Impingement. Radical Firearms Panzer 49/64-20 Brake. Radical Firearms FHR Hybrid Rail System. Custom Forged Upper Receiver with Forward Assist, Shell Deflector. Complete 12.7 BCG, MPI, Melonite Coated, Staked. Mil-Spec Charging Handle. Specifications for Radical Firearms 10.5 in. 12.7×42 (.936) Upper Assembly: Manufacturer: Radical Firearms Barrel Length: 10.5 in Muzzle Device: Panzer Brake Finish: Anodized Color: Black Model: 9in Hybrid Rail System – MHR Gun Rail: M-LOK Additional Features: Panzer Muzzle Brake Magazine Included: No Length: 10.5 in Package Contents: Radical Firearms 10.5 in. 12.7×42 (.936) Upper Assembly