Mark 4: SASS


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.


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SASS (Semi-Automatic Sniper System)- Chambered in 6.5 Grendel with a 20-inch Bear Creek Arsenal parkerized heavy barrel with a 1:8 twist and a rifle-length gas system. Over half of the barrel length is bull barrel with a diameter of .980 inches to maintain accuracy at longer ranges with multiple shots. We suggest using Hornady Black 123 grain ELD for maximum potential. This is our most accurate platform. Break into the world of AR-10 range and accuracy while staying in an AR-15 platform.

Additional information

M-LOK Rails

None (select if selecting a Quad Rail), Bravo 7.5-inch, Bravo 10.5-inch, Bravo 15-inch (raw aluminum), Midwest Industries 8-inch, Midwest Industries 10.5-inch, Midwest Industries 11.5-inch, Midwest Industries 15-inch

Quad Rails

None (select if selecting an M-LOK Rail), 8-inch Quad Rail, 10-inch Quad Rail, 12-inch Quad Rail, 15-inch Quad Rail