EVO II Stainless Steel Single Shot Action


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The Mack Brothers EVO II Stainless Steel Single Shot Action is only offered in a short action with the option of bolt face: standard, magnum, or .223.

The solid bottom action comes with a self-indexing 17-4 stainless steel recoil lug, tool-less fire control, complete bolt, and a two piece aluminum 0 MOA Picatinny rail. The enhanced recoil lug adds thread tenon length for more contact with the barrel, increasing rigidity and overall precision in the rifle system. Additional features include a streamlined external bolt stop rotated five degrees above the stock line eliminating the need to inlet the stock for clearance.

The one piece bolt body is CNC machined from a 2″ round heat treated 4340 blank in only one operation. Each bolt is nitrided for reduced friction and superior durability. The bolt handle is threaded 1/4-28 and is compatible with two other bolt handle options that are available separately. These bolt knobs are only compatible with the EVO Gen II bolts. Available in standard, magnum, .223 , and 6 PPC bolt faces. All parts proudly made in America.

Weight: 30.8 oz.

NOTE: Send FFL or FFL contact information to ffl@macbros.com along with your order number.

Interested in a barreled action? Call or email us!

Additional information

Bolt Face

Standard, Magnum, .223, 6 PPC


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