Home / Accessory-Silencer Accessories / SIG SAUER MUZZLE BRK CL 5.56MM 90 DEG View cart “SilencerCo O-RING BOOSTER PACK” 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! Yankee Hill Machine Company NIELSEN PISTON 9MM M13.5X1LH $7495 Original price was: $7495.$7135Current price is: $7135. Sale! Dead Air Armament XENO QD NOMAD MOUNT $13900 Original price was: $13900.$11895Current price is: $11895. Sale! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP 16X1LH $7495 Original price was: $7495.$7135Current price is: $7135. Sale! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP.578X28 $7495 Original price was: $7495.$7135Current price is: $7135.