+3 BRT Gas Block Pin Kit - Coil Pin SKU GB-PK-COIL $5.95 In stock Quantity: 1 Add to Bag Product Details The Gas Block Coil Pin Kit is used to install a spiral coil pin in BRT MicroPin Gas Blocks. Pinning of the gas block is a must to ensure reliability for any serious use carbine. A drill press is recommended to drill the pin hole. A roll pin starter punch, roll pin punch and hammer are recommended to drive the pin. The kit includes a cobalt drill bit and a stainless steel spiral coil pin. Save this product for later Favorite