Home / Accessory-Silencer Accessories / Dead Air Armament KEYMO ZERO 1/2-28 Sale! Dead Air Armament KEYMO ZERO 1/2-28$8900 Original price was: $8900.$8472Current price is: $8472. In stock Dead Air Armament KEYMO ZERO 1/2-28 quantity Add to cart SKU: DA320 Category: Accessory-Silencer Accessories Product ID: 106424 Description Description .30 Caliber Related products Gemtech ADAPTER MM9 5/8-24 300BLK $7500 Sale! Rugged Suppressors R3 FLASH HIDER M18X1 $10000 Original price was: $10000.$8715Current price is: $8715. AAC (Advanced Armament) TI-RANT FRONT CAP TOOL $2499 Sale! Rugged Suppressors R3L FLASH HIDER 5/8X24 $10000 Original price was: $10000.$8715Current price is: $8715.