We love the Mossberg 590® Shockwave as much any fan of compact self-defense shotguns, but it IS a handful to shoot. Let's face it: standard 12 gauge loads coming out of a 14" barrel on a small, lightweight firearm with a "bird's head" grip is a lot of tiger in the tank. Brownells to the rescue! Our Challenger Shortshell + OPSol Mini-Clip™ + Boom Kit Bundle turns this tiger into a pussy cat. The Boom Kit Combo contains four components that help you master the 'Wave:
- 300 rds of Super Shortshell 12 ga ammo (¾ oz. of #7.5 shot)
- OPSol Mini-Clip™ 1-3/4" shotshell adapter w/ installation instructions
- Carlson 590 Shockwave 12 ga replacement barrel w/ cylinder bore choke
- SB Tactical Stabilizing Brace & Pistol Grip

Here's how it all works:
1. Challenger's Super Shortshell shotshells are a full 1" shorter (1-3/4" vs. 2-3/4") than standard-length shells, so you can load more rounds into your Shockwave's tube. Slow-burning powder and a light ¾ oz. load of #7.5 pellets reduces the recoil impulse, so Super Shortshells are extremely easy on the shoulder.
2. The OPSol Mini-Clip™ fits in the opening under the receiver to enable reliable cycling of the Shortshells from the Shockwave's magazine tube into the chamber. It's easily removed when you want to shoot standard shells again.
3. Carlson's Ported Barrel supplements the Shortshells' reduced kick by redirecting combustion gases to further cut recoil AND tamp down muzzle jump. Makes your Shockwave easier to shoot with standard ammo, too. Cylinder bore, bright green Hi-Viz front sight, matte black finish.
4. The SB Tactical Stabilizing Brace and pistol grip do for the Shockwave what the original Brace has done for AR-15 pistol shooters: gives you multiple ways to support the gun while shooting for better control and comfort. This and the Carlson barrel are also sold separately as Brownells "Boom Kit".

Upgrade your Mossberg 590® Shockwave with our Challenger Shortshell + OPSol Mini-Clip™ + Boom Kit Bundle and see just how much fun shooting the 'Wave can really be. Stay "in the game" without the pain!