Purple Mountain Armory sells firearms, ammunition, and related products. You must be at least 18 years of age to enter.
Some products and transactions may require additional verification and a higher minimum age (21 for handguns under federal law).
Yankee Hill Machine
Prices and availability subject to change without notice. Product availability subject to applicable federal, state, and local laws.
NFA item: not available for online purchase.
This item is regulated under the National Firearms Act. Contact the store for availability. (717) 417-8832
Barrel Shim Set to be used to correctly orient a timed muzzle device. This set is used with our 30 Cls Q.D. Muzzle Brakes. This shim kit has an inner diameter of 5/8" and is made of stainless steel.
Included with this shim kit are shims with the following thicknesses:
Yankee Hill Machine
Yankee Hill Machine
Yankee Hill Machine
Yankee Hill Machine
