Home / Accessory-Parts / Christensen Arms TACTICAL BOLT KNOB View cart “Wilson Combat GAS BLOCK AR15 LO-PRO .875″” has been added to your cart. Christensen Arms TACTICAL BOLT KNOB$5499 Out of stock SKU: 810-00019-00 Category: Accessory-Parts Product ID: 32932 Description Description Large Tactical Bolt Knob Related products Wilson Combat SHOK-BUFF 1911 RECOIL BUFFERS $695 Wilson Combat GAS BLOCK AR15 LO-PRO .750″ $3495 Wilson Combat GAS BLOCK AR15 LO-PRO .875″ $3495 Wilson Combat GAS TUBE AR-15 SS 9.75″ $1395