EVO II Stainless Steel BDL Long Action


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The Mack Brothers EVO II Stainless Steel Long Action starts from a 416 heat treated billet, and is CNC machined in only two operations eliminating possible “tolerance stack” in the manufacturing process. The EVO II Long Action is only available in a BDL receiver body.

The BDL action comes with a self-indexing 17-4 stainless recoil lug, complete bolt, and a two-piece 0 MOA¬†aluminum 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. The Wyatt’s Extended Magazine Boxes are compatible with the action. The overall cartridge length for the long action is 3.825″. Additional features include a streamlined external bolt stop rotated five degrees above the stock line eliminating the need to inlet the stock for clearance. Tool-less fire control and extractor removal for ease of field maintenance.

The one piece bolt body is also CNC machined from a 2″ round heat treated 4340 blank in only one operation and features a modified M16 style extractor. 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 knobs are only compatible with the EVO Gen II bolt. ¬†Available in standard and magnum bolt faces. All parts proudly made in America.

Weight: 28 oz.

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

Additional information

Bolt Face

Standard, Magnum


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