Home / Parts / Sig Sauer srd piston 9 mm 1/2×28 “Hk USP, adapter Forward Picatinny rail” has been added to your cart. View cart Sig Sauer srd piston 9 mm 1/2×28$149.00 1 in stock Sig Sauer srd piston 9 mm 1/2x28 quantity Add to cart SKU: 213bu Category: Parts Product ID: 11995 Description Description New and package factory SKU number srd-piston-12×28 if interested call 9076321112 Related products Cobray m10 barrel extension $99.00 Add to cart Sig Sauer barrel assembly 1911 9 mm ultra compact $150.00 Add to cart Browning high-power, 9 mm magazine $35.00 Add to cart Thompson Center encore 22 250 Remington barrel $299.00 Add to cart