Home / Accessory-Silencer Accessories / Gemtech SHIM SET 556MM 1/2-28 View cart “Rugged Suppressors R3 FLASH HIDER M18X1” 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! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP 16X1LH $7495 $7135 Gemtech ADAPTER S&W M&P22C/22LR $6200 SilencerCo DELTA 1/2X28 THREAD SPACER $1900 Sale! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP.578X28 $7495 $7135