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Questions & Answers
I need an adapter / stock for a Remington 870 20ga. Thanks Expert Answer

I would recommend the Hogue Remington 870 20 GA. OverMold Shotgun Stock, found by using the link below:
https://www.opticsplanet.com/hogue-remington-870-20-ga-overmold-shotgun-stock.html

by Ethan, Gear Expert, December 6, 2022
Does the stock adapter for the mossberg 500/590 come with the hardware needed to attach it to the gun? Just want to make sure before I buy it? Expert Answer

The Mesa Tactical LEO Gen II Tele Stock Adapter comes with the necessary mounting equipment.

by Hunter, Gear Expert, December 1, 2022
Customer Reviews
Helpful Positive Review Stocked 590 retro by Wildbuc, Verified Owner, December 26, 2023
Fits perfectly. Hardware is included. Assembly straight forward, nothing the average person can’t accomplish. Finish is nice. Function is spot on. 110% improvement over factory stock. With a folder and buffer tube installed adjustment ar...
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1/1 found this helpful
Helpful Positive Review Mesa Tactical LEO adapter by Scott, Verified Owner, July 21, 2023
Fits the Mossberg 500 20g bantam beautifully and the quality is top notch. Comes with QD insert and all mounting hardware. Utilizes mil-spec tubes and castle nuts. The grip angle mounting position is steep, so a 17.5 degree grip ends up nearly, but n...
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1/1 found this helpful
Helpful Negative Review 1 problem. by Ruok, Verified Owner, July 31, 2024
The ar grip part did not come threaded I had to use a tap otherwise perfect but would be a problem for someone without the knowledge or tools on hand
1/1 found this helpful
Most Recent Reviews WHY IS THE GRIP ANGLE DIFFERENT? by JJ, Verified Owner, July 3, 2025
The grip angle is at 10 degrees forward. So if you put a zero angle grip on it, the grip points 10 degree forward. If you want you grip straight at a 90 degree angle from the reciever you are going to have a hard time finding the right grip. Which ma...
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Most Recent Reviews shockwave. by mrmax, Verified Owner, June 13, 2025
I bought this for my Mossberg shockwave and it fit perfectly and included all the hardware to install you'll need is an ar pistol grip, buffer tube and pistol brace �
Most Recent Reviews Mesa tactical by K0D3-X, Verified Owner, April 1, 2025
Fits Maverick 88 like a glove! Not a lot of gunsmith required just YouTube and a few tools. Product comes with hardware needed for installation. Glad to see it in stock!
Read All 21 Reviews

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Product Info for Mesa Tactical LEO Gen II Tele Stock Adapter

Mesa Tactical's LEO Gen II Telescoping Stock adapter and pistol grip system for the Remington 870 shotgun is made specifically with law enforcement in mind. The LEO Stock adapter system is designed to allow shooters the ability to fit AR style collapsible stocks and pistol grips onto their shotguns, while allowing use of open or bead sights. The versatile telescoping stock adapter system can be fitted with a standard AR-15 grip and telescoping stock, which enables tactical operators to instantly adjust the length of pull of the telescoping stock in order to accommodate differences in individual body sizes or use of body armor.image

With Mesa Tacticals telescoping stock systems, the shotguns factory stock is replaced by an investment cast aluminum adapter, to which standard AR-15 grips and telescoping buttstocks can be reliably attached. The LEO stock adapters provide a lower stock elevation allowing the use of iron sights or the front bead. All Mesa Tactical stock adapters incorporate multiple sling attachment methods.

The LEO Gen II Telescoping Stock Adapter for the Remington 870 shotgun is the first of Mesa Tacticals Generation II LEO adapters. The LEO adapters second generation has been completely redesigned for increased comfort, superior handling and configuration versatility:

The new adapter is slightly shorter and more compact than the earlier LEO adapters.

The pistol grip has been angled forward several degrees, similar to the angle of an M1911 pistol grip, to provide more space for the webbing of the operators thumb above and behind the grip.

The enhanced grip angle allows the use of highly comfortable beavertail AR-15 grips such as the ERGO Grip (which in included the complete LEO Gen II Stock Kits).

The LEO Gen II Telescoping Stock Adapter end plate engages the adapter low on the sides instead of at the top, so operators are less likely to come into compact with it under recoil.

All LEO Gen II Telescoping Stock Adapters include Mesa Tacticals innovative (and widely copied) pocket hook loops and sling loops.

The LEO adapter is available in three types of kits, adapter kits, recoil starter packs or complete stock kits. Mesa Tacticals upgraded versions include a hydraulic recoil buffer which replaces the standard receiver extension tube normally used with AR-15 style telescoping stock assemblies. The recoil buffer is manufactured for Mesa Tactical by Kyntec. The Kynshot Hydraulic Buffer (Mil-spec) is a recoil reducer designed for professional operators who require optimum accuracy and control.

Specifications for Mesa Tactical LEO Gen II Tele Stock Adapter:

Manufacturer: Mesa Tactical
Condition: New
Color: Black
Gun Type: Shotgun
Fabric/Material: Aircraft Grade Aluminum
Gauge: 12

Features of Mesa Tactical LEO Gen II Telescoping Stock Adapter

  • Adapts AR-15 style buttstocks and pistol grips for use with Remington 870, Mossberg 500/590 and Beretta 1301 shotguns.
  • Stock adapters are investment cast aircraft grade aluminum, CNC machined and powdercoated black with a tough, chemical resistant finish.
  • Adjustable length-of-pull (LoP) to fit shooters stature or for use with body armor and other equipment.
  • Optional Kynshot Hydraulic Recoil Buffer reduces felt recoil by up to 70%.
  • Gives the shotgun similar handling characteristics to the AR-15.
  • Collapsible stock makes shotgun easier to stow, transport and deploy.
  • Pistol grip configuration allows increased control and user comfort.
  • Sling attachment points included.
  • Optional SureShell aluminum carriers can be added to the M4 Carbine buttstock.
  • No gunsmithing required.

Package Contents:

  • Mesa Tactical LEO Gen II Telescoping Stock Adapter

Mesa Tactical LEO Gen II Tele Stock Adapter Orderable Models

List of Orderable Models

Mesa Tactical LEO Gen II Tele Stock Adapter for Rem 870 12-GA only, Black, 91150 , MPN: 91150 , UPC: 878405005407 , Code: 29Z-STA-TSA-91150
Mesa Tactical LEO Gen II Tele Stock Adapter for Moss 500/590,Mav 88 12-GA/20-GA, Black, 92630 , MPN: 92630 , UPC: 878405005506 , Code: 29Z-STA-TSA-92630
Mesa Tactical LEO Gen II Telescoping Stock Adapter for Rem V3/Tac-13, 12 Gauge, Black, 95830 , MPN: 95830 , UPC: 878405005209 , Code: 29Z-STA-TSA-95830

Mesa Tactical LEO Gen II Tele Stock Adapter Unavailable & Discontinued Models

List of Unorderable Models

USED Mesa Tactical LEO Gen II Tele Stock Adapter for Rem 870 12-GA only, Black, 91150, EDEMO1, Condition Parts Only/Salvage, Defective , MPN: 91150-EDEMO1 , Code: 29Z-STA-TSA-91150-EDEMO-DF-F
USED Mesa Tactical LEO Gen II Tele Stock Adapter for Moss 500/590,Mav 88 12-GA/20-GA, Black, 92630, EDEMO4, Used, Condition Fair , MPN: 92630-EDEMO4 , Code: 29Z-STA-TSA-92630-EDEMO4
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