The LM8 upper receiver has 16.25″ of uninterrupted 1913 picatinny rail on the 12 o’clock position. The 3, 6 and 9 o’clock rails have locating lugs and screw holes. The locating lugs take the recoil of attached accessories while the screw holes hold the accessory or rail to the weapon.
Monolithic rail platform piston barrels utilize a standard/suppressed option gas block with removable piston rod and spring. They possess proprietary coating and are cryogenically treated for long term durability.
5.56×45 (.223): 12″ | 16″
6.8 SPC: 16″