Home / Accessory-Silencer Accessories / Rugged Suppressors OBSIDIAN PISTON M13.5X1 LH View cart “Yankee Hill Machine Company SIDEWINDER PISTON 40SW 9/16X24” has been added to your cart. Sale! Rugged Suppressors OBSIDIAN PISTON M13.5X1 LH$8000 Original price was: $8000.$7196Current price is: $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! Dead Air Armament WOLVERINE INSERT 24MM RH LONG $8900 Original price was: $8900.$7865Current price is: $7865. SilencerCo DELTA 1/2X28 THREAD SPACER $1900 Sale! Dead Air Armament SANDMAN 5.56 FRONT CAP $6900 Original price was: $6900.$6042Current price is: $6042. Sale! SilencerCo 3-LUG MUZZLE DEVICE 9MM 5/8X24 $8900 Original price was: $8900.$8211Current price is: $8211.