Home / Accessory-Silencer Accessories / Gemtech SHIM SET 556MM 1/2-28 View cart “Gemtech ADAPTER S&W M&P22C/22LR” has been added to your cart. Gemtech SHIM SET 556MM 1/2-28$700 In stock Gemtech SHIM SET 556MM 1/2-28 quantity Add to cart SKU: 3013332 Category: Accessory-Silencer Accessories Product ID: 61326 Description Description 1/2-28Fits 5.56mm Rifles Related products Sale! Rugged Suppressors R3 FLASH HIDER M18X1 $10000 Original price was: $10000.$8715Current price is: $8715. Dead Air Armament SIG MOSQUITO THRD ADAPT 1/2X28 $4500 Gemtech ADAPTER S&W M&P22C/22LR $6200 Sale! Rugged Suppressors OBSIDIAN45 3 LUG ADAPT 9/16X24 $8500 Original price was: $8500.$7561Current price is: $7561.