Richter Precision Inc. founded 1978 Located in East Petersburg PA USA, Veteran Owned. Armor-Guard and S-Line Coatings for the fire arm and sporting industry. PVD, DLC, and DCD coatings, providing Durability, Increased barrel life, Reduced Carbon Fouling, Lower Friction, and Superior Cleanability. Class 3 in-house manufacturing, Vacuum Heat treating, Full Metallurgical Lab. E-Form 3 ATF Registered, Class 7 FFL and SOT Stamp, ITAR registered. (less)