Description
The Mesa Tactical LEO Gen II Telescoping Stock Kit takes the tried-and-true Remington 870 and gives it a serious ergonomic upgrade. In place of the factory stock, you get a CNC-machined, investment-cast aircraft aluminum adapter that mimics the rear of an AR-15 lower receiver, so any standard AR-15 buffer tube, collapsible stock, and pistol grip can thread right on. That means adjustable length of pull to dial in your fit, whether you're shooting in a t-shirt or bulked up with a plate carrier and gear.
What Sets the LEO Gen II Apart
This is the second generation of Mesa Tactical's LEO line, and the changes are worth noting. The adapter is shorter and more compact than the original, and it's shaped as a flat oval with the flat sides top and bottom. That design keeps the end plate low on the sides instead of up top, so it's less likely to smack your cheek under recoil. The pistol grip angle was also pushed forward a few degrees, closer to a 1911 grip, which opens up room for the web of your hand and makes carrying the gun a lot more natural. The whole thing wears a tough, chemical-resistant powder coat finish in black.
Sights Stay Where You Need Them
The big draw of the LEO adapter over Mesa's High-tube models is stock elevation. It sits about an inch lower, which lets you keep running your open sights or front bead without adding a raised optic rail. For a duty or home-defense 870, that's exactly what most folks want.
Installing the Kit on Your 870
No gunsmithing required here. Most people knock out the swap in under 30 minutes with basic hand tools, and reviewers consistently mention the clear instructions and rock-solid fit once it's on. The complete kit gives you everything to get running, and every Mesa Tactical product is made in the USA and backed by a lifetime warranty. Note this version fits the 12 gauge 870 only, not the 20 gauge frame.
Key Specifications
- Manufacturer: Mesa Tactical
- Manufacturer Part Number: 91160
- UPC: 878405005414
- Model: Remington 870
- Fitment: Remington 870 12 Gauge only
- Gauge: 12 Gauge
- Color: Black
- Product Type: Telescoping Stock Adapter Kit
- Adapter Material: Investment-cast aircraft-grade aluminum, CNC machined
- Finish: Corrosion-resistant powder coat
- Stock Compatibility: Standard AR-15 collapsible stocks and pistol grips
- Length of Pull: Adjustable
- Sights: Retains open or bead sights
- Gunsmithing: None required
- Country of Origin: USA
- Warranty: Lifetime
What’s Included
- LEO Gen II stock adapter
- M4 carbine telescoping buttstock
- Mesatac Trego pistol grip
- Push-button sling swivel
Frequently Asked Questions
Will the LEO Gen II stock kit fit any Remington 870?
This kit (part 91160) is built specifically for the 12 gauge Remington 870 and is not compatible with 20 gauge frames. It replaces the factory stock with an adapter that accepts standard AR-15 buffer tubes, collapsible stocks, and pistol grips. If you run a 20 gauge or a different platform like a Mossberg or Beretta, Mesa Tactical makes dedicated versions for those.
Can I still use my iron sights or bead with this stock?
Yes, that's the whole point of the LEO line. The adapter sits about an inch lower than Mesa's High-tube models, giving you a stock elevation that lines up with open sights or the front bead. If you want a raised platform for an AR-height optic, you'd want a High-tube adapter instead.
Do I need a gunsmith to install the LEO Gen II kit?
No gunsmithing is required. Most people complete the swap in under 30 minutes using basic hand tools, and the kit comes with clear instructions. Reviewers regularly note how solid and secure the adapter feels once it's mounted.
What's different about the Gen II compared to the original LEO adapter?
The Gen II adapter is shorter and more compact, with a flat-oval shape that keeps the end plate low on the sides so it's less likely to contact your face under recoil. The pistol grip was also angled forward, similar to a 1911, for a more comfortable hold. It ships with the Mesatac Trego beavertail grip, which takes advantage of that new grip angle.






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