Mark 4: Patrol


When selecting a Rail option, please select either a M-LOK Rail or a Quad Rail and select the ‘None’ option on the rail that you do not want.



Chambered in 6.5 Grendel with a 11.5-inch Alexander Arms barrel: button-rifled, 416 R stainless steel, 1:8 twist rate, 5/8-24 TPI RH muzzle threading, 60-degree muzzle crown, and a carbine-length gas system. We suggest using Hornady Black 123 grain ELD for hunting or self-defense situations. This is our flagship upper that we suggest for multiple uses such as hunting, home defense, or mission and destination unknown situations. This basically can replace the ballistics of a 5.56 but with a shorter PDW-like package.

Additional information

M-LOK Rails

None (select if selecting a Quad Rail), Bravo 7.5-inch, Bravo 10.5-inch (raw aluminum), Midwest Industries 8-inch, Midwest Industries 10.5-inch, Midwest Industries 11.5-inch

Quad Rails

None (select if selecting an M-LOK Rail), 8-inch Quad Rail, 10-inch Quad Rail