TacFire MAR145 BCG Gas Key for 5.56x45mm NATO
https://www.tandktactical.com/shop/729205523748-tacfire-mar145-bcg-gas-key-for-5-56x45mm-nato-31323
https://www.tandktactical.com/web/image/product.template/31323/image_1920?unique=c8fd665
Replace you BCG Gas Key with this product from TacFire
