Home / Accessory-Silencer Accessories / Rugged Suppressors OBSIDIAN PISTON M13.5X1 LH View cart “Gemtech THREAD PROTECTOR 1/2-28 RF” has been added to your cart. Sale! Rugged Suppressors OBSIDIAN PISTON M13.5X1 LH$8000 $7196 In stock Rugged Suppressors OBSIDIAN PISTON M13.5X1 LH quantity Add to cart SKU: OP004 Category: Accessory-Silencer Accessories Product ID: 54267 Description Description 17-4 Stainless Steel Related products Sale! Yankee Hill Machine Company SIDEWINDER PISTON 40SW 9/16X24 $7495 $7135 Gemtech THREAD PROTECTOR 1/2-28 RF $1800 Sale! Rugged Suppressors R3 FLASH HIDER M18X1 $10000 $8715 Sale! Dead Air Armament SANDMAN 5.56 FRONT CAP $6900 $6042