Now you can personalize your Home defense shotgun with one or more of the many Advanced Technology accessories such as a magazine tube extension for your 870 Remington or flashlight barrel clamp for a Mossberg 590 as well as the H&R Pardner Pup, Hawk and Norinco 98.

MAG EXTENSION: 7-ROUND #SMR0700 Rem SMW0900 Win
Increase magazine capacity to 7 rounds. Made of virtually indestructible, glass-filled nylon injection-molded over a steel connecting nut. Will not rust or dent. New spring and instructions. Minimum barrel length for 7 shot extension is 18-1/5". Easy to install - no gunsmithing.

MAG EXTENSION: 8-ROUND #SMR0800 Rem SMW1000 Win
Increase magazine capacity to 8 rounds. Made of virtually indestructible, glass-filled nylon injection-molded over a steel connecting nut. Will not rust or dent. New spring and instructions. Minimum barrel length for 8 shot extension is 20". Easy to install - no gunsmithing.

Also check out the all metal magazine tubes from TacStar

$10.95

MAGAZINE/FLASHLIGHT CLAMP #SMC1100
May be used to mount magazine extensions (see below) or 1 inch diameter flashlights or lasers to barrel. Injection molded from indestructible, black, glass-filled nylon. Simple installation - no gunsmithing.

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Advanced Technology has discontinued their Muzzle Break - which in all honesty is no great loss. Since the muzzle break was all plastic you had to install it on your barrel so no part extended past the front of your barrel. Otherwise you would blow up the muzzle break. If you have a Mossberg check out the Minotaur Tactical Muzzle Break.