Home / Parts / Sig Sauer srd piston 9 mm 1/2×28 “uzi smg barrel” 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 A.R. 15 brass catcher $55.00 Add to cart Colt 20 round Magazine 556 $35.00 Add to cart Astra 300 grips $49.00 Add to cart Thompson Center pro Hunter forearm $99.00 Add to cart