AAC Piston, 45ACP, 1/2x28 Short 1911 or FNP, Fits Ti-Rant 45 103250 In stock at Eden Prairie store. Available today! $74.99 MSRP Price: $72.48 Description Details Reviews Shipping info .578"-28 Short (1911 or FNP) UPC: 847128006695Manufacturer: Advanced Armament CorpModel: 103250Caliber: 45ACPCategory: PartsOtherStock: 1Unit/Measure: ea This item may be shipped directly to your home address, unless you live in a restricted state.