Bolt assembly for the MF-50S and MF-50M upper receivers. Includes the proprietary Mechanically Assisted Pin Safety (MAPS) as well as the hammer drop safety. Comes as a complete assembly including the bolt handle and includes head spacing at the McCutchen Firearms factory.

Accuracy International 5-Round Magazine is a spare magazine for MF-50M models, AI and AICS rifles.  Available in both .50 BMG and .416 Barrett

McCutchen Firearms MF-50 Firing Pin

MF-50 Hammer, Spring and Retention Pins

Lower Parts Kit for the 50 BMG Uppers. Everything you need to outfit the stripped lower of your choice.

The DPMS AR-15 rifle length buffer tube made from Mil-Spec 6061 aluminum and features a matte black hardcoat anodized finish.

The McCutchen Firearms small parts kit contains all the spare parts for any MF-50 series bolt head.

McCutchen Firearms' MF-50 series features a large bell grip bolt handle, for greater comfort and operater ease.

KeyMod Nut and Screw (Set of 2)