LEO® Gen II Hydraulic Recoil Starter Pack For Moss 500/590 and Mav 88 (12-GA and 20-GA) 

The concept is simple: the shotgun stock is replaced by an adapter that mimics the stock attachment point of an AR-15 lower receiver. This adapter accepts an AR-15 receiver buffer tube. The AR-15 collapsible stock and pistol grip can then be reliably attached to the shotgun. 

There are two lines of Mesa Tactical telescoping stock adapters:

1. High-tube® telescoping stock adapters, that require the use of rail mounted optics;

2. LEO® telescoping stock adapters, which feature a stock elevation about an inch lower than the High-tube adapters and so don’t require sighting or aiming aids.

The most important capability of these adapters is to facilitate the use of collapsing or telescoping stocks, which provide a shorter length of pull (LoP) than the factory stock, which is especially important for law enforcement or “tactical” operators. In addition, these stock adapters accept a hydraulic buffer from KynShot™ that reduces felt recoil. The Mesa Tactical/KynShot combination is by far the most robust and most effective of several recoil-reducing shotgun stock systems on the market.

Hydraulic recoil starter kits include the stock adapter and hydraulic recoil buffer, plus installation hardware (no stock or grip). All LEO adapters accept optional push-button sling swivels.