LSS Mossberg MVP Chassis



  • Mossberg MVP 5.56 (.223) using AR-15 Magazines
  • Mossberg MVP 7.62 (.308) using AR-10 Magazines


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LSS Mossberg MVP Chassis

The LSS Mossberg MVP Chassis system was designed to be as compact as possible and for use with short barreled bolt action rifles. It converts your rifle to an external box magazine fed rifle, while improving accuracy, and giving the rifle superior ergonomics by allowing use of AR-15 butt-stocks and grips. The V-shaped bedding and free floated fore end improve accuracy and ergonomics. The fore-end allows for barrel contours up to 1″ in diameter.

The LSS Mossberg MVP Chassis system is manufactured out of billet 6061-T6 aluminum, which has been hard anodized to mil spec type III for extra strenth, and has been finished with Cerakote™ in Black or Flat Dark Earth (FDE).

To keep  the LSS Mossberg MVP Chassis system compact, it was designed for collapsible AR-15 buttstocks, however fixed buttstocks can mounted with the use of a fixed stock adapter.


The LSS Mossberg MVP Chassis is designed to accept any AR-15 butt-stock and pistol grip (purchased seperately), offering the option to customize from the wide variety of accessories available on the market.

The LSS Mossberg MVP Chassis uses external box style magazines in .223 and .308 caliber for Short Action, and supports installation of bolt on MIL-STN-1913 accessory mounting rails. Mounting holes are spaced for Magpul style L5 (11 slots) and L3 (7 slots) rails (1.600” / 3.200”) to be used on the bottom of the fore end up to 6.5″ in length.


The LSS Mossberg MVP Chassis system comes as a 1-piece chassis, with all required mounting hardware included. This includes new action screws, and a screw for the pistol grip.

To complete this chassis on your rifle, the additional items you need to purchase are:

  • Any AR-15 buttstock. For fixed buttstocks you will need the fixed stock adapter.
  • A buffer tube for your buttstock. (Both milspec and commercial work on the LSS Mossberg MVP Chassis)
  • An AR-15 Pistol Grip. Ideally without a beavertail, or use a soft (bendable) beavertail.
  • At least one magazine.
  • If you prefer a longer fore-end, please also see the HS3 Chassis System (available soon for Mossberg MVP).

Also available for SavageRemington 700, Remington Model 7, and Tikka T3

Weight 25.6 oz




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