Sport and Defense, LLC

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.