Founded in 1998, Lone Wolf Arms manufactures and supplies aftermarket handgun parts, with a particular focus on Glock-compatible upgrades. The company has made upgraded pistol barrels since the early 2000s, producing them in the United States while using in-house CAD engineering, CNC machining and raw-material quality control. Its lineup also includes complete pistols and suppressor components, extending its long-running role in handgun customization.
Stealth Arms, LLCStealth Arms began in 2012 as a small St. Marys, Ohio workshop selling specialized targets before growing into a U.S. manufacturer for gun owners who want to build and customize their own firearms. The company machines its parts in-house, inspects every piece before it leaves the shop, and donates proceeds from its scrap metal to charities aligned with its mission.ST. MARYS, OH
US Armorment, LLCUS Armorment, LLC sells ammunition, handguns, long guns, firearm tools, optics, and related shooting accessories. The company states that it custom engineers and manufactures its own parts and accessories, and serves rifle technicians, civilian shooters, military, and professional users.332994BENSALEM, PA
Keystone ArmsSince 1993, Matamoras-based Keystone Arms has dealt in firearms while also making and supplying hard-to-find parts for historic guns. Its shop is particularly distinctive for its deep Reising submachine-gun and Thompson parts offerings, including Keystone-made Reising magazines and reproduction components. The business serves customers through its retail store and online shop, with firearms also offered through auctions and Davidson’s.MATAMORAS, PA
Evolution Gun WorksSince 1991, Evolution Gun Works has built its identity around lessons learned from more than a third of a million rounds of competition shooting. The American manufacturer makes precision firearm components for shooters, gunsmiths and OEM partners, with its experience shaping how it selects materials and designs parts for sustained use.QUAKERTOWN, PA