Home / Accessory-Silencer Accessories / SIG SAUER MUZZLE BRK CL 5.56MM 90 DEG You cannot add "Gemtech PISTON GM-45 LID MK23" to the cart because the product is out of stock. 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 Dead Air Armament SIG MOSQUITO THRD ADAPT 1/2X28 $4500 Sale! Rugged Suppressors OBSIDIAN PISTON 9/16×24 $8000 Original price was: $8000.$7196Current price is: $7196. SilencerCo O-RING BOOSTER PACK $900