Area 419 Hellfire 2P Features The Area 419 Hellfire 2P Muzzle Brake is designed specifically to optimize performance for semi-automatic and hunting weapon systems with barrels of 20 inches or less. To simplify stocking and reduce cost to the consumer Area 419 offers the 2P brake in two caliber selections with this version covering .223 through 6mm bore diameters including 5.56 NATO .204 and .17 caliber rifles. The brake ships with a universal adapter included so shooters have everything needed for a complete installation in one package. Machined from steel and measuring 6 inches overall the brake weighs 0.5 pounds adding minimal bulk to a shorter barreled rifle. Like the rest of the Hellfire lineup the 2P uses the Self Timing system meaning the brake will not rotate as the collar is torqued down to lock removing the guesswork of port alignment. A simple round knurled nut allows the shooter to time the brake without any tools. Return to zero performance is excellent so removing and reinstalling the brake does not require re-zeroing the rifle. Installation involves torquing the universal adapter onto the barrel with a 5/8 inch wrench before left hand threading the brake and collar assembly into place making the Hellfire 2P a practical recoil reduction option for compact rifle builds. Area 419 Hellfire 2P Specifications Manufacturer: Area 419 Model: Hellfire 2P Caliber: .223 / 6mm Material: Steel Length: 6 Includes: Adapter Thread Pattern: 1/2x28 Weight: 0.5 lbs Available At: GrabAGun