Home / AR Upper Components / SOLGW MIL-SPEC FIRING PIN M4/AR15 “SOLGW Gas Block Low Profile .750 w/ Set screws – V2” has been added to your cart. View cart Out of stock SOLGW MIL-SPEC FIRING PIN M4/AR15$12.34 Out of stock Want to be notified when this product is back in stock? Notify me UPC: 785939517910 SKU: M4FIRINGPIN Category: AR Upper Components Tag: solgw Product ID: 15326 Description Description . Related products AERO PRECISION 5.56 AR15 BOLT CARRIER GROUP BLACK NITRIDE $154.99 Add to cart Out of stock SIONICS Gas Block Low Profile .750 $29.95 Read more LBE Unlimited ARFPN – Firing Pin $7.95 Add to cart Out of stock SIONICS Upper Receiver Parts Kit $29.95 Read more