Shop › MIDWEST BLAST CAN 1/2X28 5.56/223 MIDWEST BLAST CAN 1/2X28 5.56/223 $33.95 Midwest Industries Blast Can, 1/2X28 TPI, For 5.56/.223 Rifles, Overall Length 3.375", Includes Crush Washer, Black Hardcoat Anodized 6061 Aluminum MI-BC556 Quantity: Add To Cart Added! Midwest Industries Blast Can, 1/2X28 TPI, For 5.56/.223 Rifles, Overall Length 3.375", Includes Crush Washer, Black Hardcoat Anodized 6061 Aluminum MI-BC556