Product Description YANKEE HILL MACHINE COMPANY Sidewinder Piston 45ACP .578x28 Threads | Stainless YANKEE HILL MACHINE COMPANY Sidewinder Piston 45ACP .578x28 Threads | Stainless at KYGUNCO Browse all KYGUNCO deals $62.96 In Stock at KYGUNCO Price checked 9 days ago Buy Now at KYGUNCO Secure checkout Easy returns or compare prices Amazon eBay Product Details Brand Yankee Hill Machine Company Yankee Hill Machine Company