Boxed Colt .22 LR Conversion Unit w/ 2 Mags

Updated August 22, 2026

This auction ended on August 30, 2026. See upcoming auctions from ESB Auction or current firearms & militaria auctions.
Lot number33
CategoryFirearms & Militaria
AuctionCollectible Firearms
DateAugust 30, 2026 at 7:00 PM EDT
Auction houseESB Auction
LocationGrabill, Indiana

Specifications & Details: Make: Colt's Manufacturing Co. (Hartford, Conn. U.S.A.) Model: .22 Caliber Conversion Unit (Model # O-3150) Caliber: .22 Long Rifle (.22 LR) Compatibility: Fits Colt 1911 / Government Model .45 ACP & .38 Super Receivers Barrel Length: 5 Inch with Floating Chamber Sights: Colt Accro Micro-Adjustable Rear Sight & Target Front Sight Finish: Factory Blued ("BLUE") Magazines: Includes Two (2) Factory Colt .22 LR Steel Magazines Includes: Original Woodgrain Box, Styrofoam Insert, Recoil Spring & Assembly, Slide Stop, Bushings, and Factory Instruction Sheet Condition Notes: Bore & Floating Chamber: Bright, clean bore with sharp rifling; floating chamber moves freely and cleanly Bluing/Metal: Original factory bluing on slide is deep and uniform with minimal high-edge wear Magazines: Both steel magazines show clean feed lips and strong spring tension; floorplates bear crisp Colt markings Box & Paperwork: Woodgrain outer sleeve shows sharp end label matching Model O-3150; original instruction manual has clean fold lines Mechanics: Floating chamber operates smoothly inside barrel; sight adjustment screws turn cleanly. Please review all photos carefully for visual condition details. High-resolution photos represent the exact firearm being auctioned. Check photos for precise cosmetics and serial number details.

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