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The ATI Gen 2 Halo Side Saddle is a skeletonized shell carrier built to keep nine extra 12-gauge rounds within reach on the receiver. It's CNC machined from 6061-T6 aluminum and wears a military Type III anodized finish, so it shrugs off knocks, weather, and years of range time without getting ugly. If you've been reloading out of a pocket or a stock cuff, having your spares mounted right on the gun changes how fast you can top off.
The headline feature here is the modular layout. The nine reinforced synthetic shell holders mount anywhere along the saddle, and you can run all nine or just a few depending on how you like your gun set up. Left-hand shooter, competition rig, or a lean home-defense build, you dial in the spacing and count that works for you rather than living with a fixed block. The reinforced holders grip shells firmly so they stay put through recoil and rough handling.
Up top there's an integrated Picatinny-style rail, which is a nice touch if you want to add a red dot, a light mount, or ghost ring sights without giving up your shell storage. This saddle is a direct fit on the Mossberg 500 and 590 in 12 gauge with a drilled and tapped receiver, and it installs using the factory mounting holes. It also fits the Maverick 88, Remington 870, and Winchester SXP, though those platforms need the receiver drilled and tapped first, so plan on a trip to the gunsmith for anything outside the Mossberg 500/590 family.
ATI includes 8/32 mounting screws with thread patch, and the whole unit weighs under a pound so it won't throw off the balance of your shotgun. One thing to keep in mind during install is not to over-tighten the screws. Snug them down properly and this saddle rides tight and quiet, giving a 500 or 590 a serious jump in rounds you can carry ready to go. It's backed by a limited lifetime warranty.
It's a direct fit on the Mossberg 500 and 590 in 12 gauge as long as the receiver is already drilled and tapped. It will also fit the Maverick 88, Remington 870, and Winchester SXP, but those need the receiver drilled and tapped first, which means gunsmithing. If you're running a Mossberg 500/590, installation uses the existing factory holes.
Yes, that's the whole idea behind the modular design. The nine shell holders mount anywhere along the saddle, so you can run all nine or just a few and set the spacing to fit how you shoot. It gives you room to customize a competition, defense, or hunting setup without being locked into a fixed layout.
No, the Gen 2 Halo is built specifically for 12-gauge shells and ATI does not offer a 20-gauge version of this exact model. The holders are sized for 12GA rounds, so pairing it with a 12-gauge shotgun is the way to go.
Yes, it has an integrated top rail that accepts a red dot, ghost ring sights, or other Picatinny-compatible accessories. That lets you add a sighting system without giving up your on-gun shell storage. Just be careful not to over-tighten the mounting screws during install.
| UPC | 758152622372 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | A.5.10.2551 |
| Color | Black |
| Length | 15 |
| Product Type | Side Saddle |
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