American Industries M-100P .22 LR Semi-Auto Pistol, 6" Barrel, 100-Round Helical Magazine
This American Industries M-100P stands out for its compact blowback design paired with a top-mounted, removable 100-round helical magazine. It features a 6" steel barrel, left-side charging handle, and iron sights with a distinctive triangular rear sight housing. The receiver carries CALICO and M-100P .22 LR markings, Bakersfield, CA origin, and patent information, offering a well-documented example of the M-100 series with a 100+1 capacity.
Condition
Overall Condition: Fair condition, showing extensive signs of prior use and handling.
Bore Overall Condition: Fair - Generally clean, some residue or smudges, slight corrosion.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Expect minor blemishing and small scratches on the exterior surfaces. There is some rust present on the barrel. The bore presents a clean, shiny appearance on inspection.
What's Included
- American Industries M-100P .22 LR pistol
- 1x 100-round top-mounted helical magazine with rear ratchet/winder hub (installed)
The M-100P is a compact, semi-automatic, blowback-operated .22 LR pistol built around a distinctive top-mounted helical magazine system. This setup provides a 100+1 capacity and uses a rear ratchet/winder cap for loading and tensioning.
Construction combines a 6" steel barrel with an alloy receiver and a polymer lower featuring an integrated, one-piece textured grip. A left-side charging handle and a manual safety with a red "F" index dot support straightforward handling and operation.
Iron sights include a front post and a triangular rear sight housing, giving a clear, durable sight picture aligned above the magazine. The compact size makes the M-100P easy to manage while maintaining the hallmark high-capacity feature of the series.
Receiver markings note CALICO and M-100P .22 LR, American Industries, and "Made in Bakersfield, CA, U.S.A." Patent markings include U.S. Pat. No. 4,676,137 with U.S. & Foreign Patents Pending, further documenting this M-100 series configuration.