Home / Accessory-Silencer Accessories / SIG SAUER MUZZLE BRK CL 5.56MM 90 DEG View cart “Yankee Hill Machine Company SIDEWINDER PISTON 9MM 1/2X28” has been added to your cart. Sale! SIG SAUER MUZZLE BRK CL 5.56MM 90 DEG$17999 Original price was: $17999.$16957Current price is: $16957. Out of stock SKU: SL-556-12X28-90DEG-M Category: Accessory-Silencer Accessories Product ID: 42666 Description Description Mzzle Bke Assem SLX/SLH Series90 Degree Shoulder Related products Sale! Dead Air Armament GHOST FIXED MOUNT M13.5X1LH $8900 Original price was: $8900.$7865Current price is: $7865. Sale! Rugged Suppressors OBSIDIAN PISTON 9/16×24 $8000 Original price was: $8000.$7196Current price is: $7196. Gemtech ADAPTER MM9 FTM 1/2-28 $7500 Sale! Yankee Hill Machine Company SIDEWINDER PISTON 40SW 9/16X24 $7495 Original price was: $7495.$7135Current price is: $7135.