This adapter is for Mossberg 500 series, Maverick, Shockwave and Persuader 12 guage shotguns only. It allows you to use Aguila mini shells without problems. They are $9.95 each.
Shipping is $3.00 regardless of how many you purchase. The adapter only comes in black. It is made of high-impact nylon 6,6, and is virtually unbreakable and won't scratch your gun.
If you have any problem making a purchase or have any questions, please text me at 225-324-0995.