Cart Remove item Thumbnail image Product Price Quantity Subtotal 223 plastic muzzle caps $2.99 223 plastic muzzle caps quantity $2.99 40 mm M-79-203. adapter for 20 gauge bird bombs. You will need to supply your own 20 gauge barrel to fit inside the adapter. $99.95 40 mm M-79-203. adapter for 20 gauge bird bombs. You will need to supply your own 20 gauge barrel to fit inside the adapter. quantity $99.95 Coupon: Apply coupon Update cart Cart totals Subtotal $102.94 Tax $0.00 Total $102.94 Proceed to checkout