This is a Patriot Ordnance Factory Muzzle Brake known as the 308, model 309.
Designed by POF this nitride heat treated muzzle brake controls muzzle impulse for ultimate accuracy and an unbelievably soft recoil. Comes complete with a nitride heat treated collar and five (5) strike prongs.
Features:
5/8X24 Thread pitch
Nitride finish
Helps with recoil management
Comes with collar
