20" med contour with a rifle length gas system . Barrels ported to run factory ammo with a standard CAR buffer and spring. Optional 750XD bolt, the strongest AR15 Grendel bolt made.
Chamber: 6.5 Grendel body spec with mid spec throat to increase accuracy.
Bolt: uses .135 recess---750 XD(extreme duty) ARP bolt could be an option(will handle 60,000psi)
Barrel Length: 20"
Twist Rate: 1:8.5- Hybrid 5R rifling
Gas System: RIFLE Length
Diameter at Gas Port: .750"
Muzle Thread Pitch: 5/8x24
Material: 4150 CMV
Process: Button Rifled
Barrel Lining: Melonite
Barrel Extension: M4
Weight: 2lb 10oz
Comes with ARP 9310 Enhanced bolt