LSS-22 Chassis for Rimfire Rifles

LSS-22 Chassis for Rimfire Rifles

Availability: In stock

Our LSS-22 Chassis is based on our popular LSS Chassis system for rim-fire rifles.
Now taking pre-orders for the Ruger 10/22. Ships by mid July!

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Product Description


Our LSS-22 chassis system for .22LR caliber rifles is lightweight and compact, and adopts the same design features as our popular LSS chassis for center fire bolt action rifles. You will notice a significant improvement in accuracy due to the V-shaped bedding and free floated forend, which allows for barrel contours up to 1" in diameter.

The chassis system is manufactured out of billet 6061-T6 aluminum, and has been finished with Cerakote™ in Black or Flat Dark Earth (FDE).

To keep this chassis system compact, we have designed it to take collapsible AR-15 buttstocks. Fixed buttstocks can also be mounted with the use of a fixed stock adapter.

The LSS-22 uses the your factory magazine and each chassis is compatible with all factory barrel contours.

Because we have lowered the buttstock interface, The Savage Mark II, CZ 455 and Ruger American are able to use iron sights with this chassis. If you are using a scope, we recommend a stock with a cheek riser.


The MDT LSS-22 chassis system is currently manufactured for the following rifle platforms:

  • Ruger American
  • CZ 455
  • Browning T-Bolt
  • Savage Mark II
  • Anschutz Match 54- compatible only with models 1710 and 1712
  • Anschutz Match 64- compatible only with models 1416 and 1417
  • Ruger 10/22

The LSS-22 will not fit 17 HMR or 22 WMR versions. Updates to accommodate magnum rifles are planned for late-2017
The LSS-22 will fit all factory heavy barrels. 

Important Notes

  • The Ruger American requires the two OEM fixing components in addition to the magazine
  • The Browning T-Bolt requires the OEM magazine holder in addition to the magazine
  • The Savage Mark II, CZ 455 and Ruger American are able to use iron sights.
  • The chassis for the Ruger 10/22 has slightly different aestetics. Please ensure to view the images prior to purchasing.


The LSS-22 chassis is designed to accept any AR-15 buttstock and pistol grip (purchased separately), and allows for customization with a wide variety of accessories.

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 forend.


  • Up to 21% increase in accuracy
  • CNC Machined from 6061 aluminum
  • Cerakote Finish (in Black or Flat Dark Earth)
  • Hole spacing for Magpul L5 (11 slot) and L3 (7 slot) rails
  • Designed for collapsible AR-15 buttstocks
  • Accepts AR-15 pistol grips
  • Lightweight, free-floating modular forend
  • Accommodates barrels up to 1" diameter.
  • Length of pull of 11.5”-14.75” (based off Hogue stock)
  • Compatible with OEM Magazines
  • Weight: 1.6lb - 1.8lb


The LSS-22 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 install this chassis on your rifle, here are some additional items you will need to purchase:

  • Any AR-15 buttstock. For fixed buttstocks, you will need the fixed stock adapter. We have also designed the Skeleton Carbine Stock for our LSS chassis. 
  • A buffer tube for your buttstock (both mil-spec and commercial work with our chassis)
  • An AR-15 pistol grip. Ideally without a beavertail, or with a soft (bendable) beavertail
  • Your original factory magazine

Installation Videos:

For installation of Browning T-Bolt click here.
For installation of CZ- 455 click here.
For installation of Anschutz 54 click here.
For installation of Anschutz 64 click here.
For installation of Savage Mark II click here.
For installation of Ruger American click here.


Note that the version shown uses the Skeleton Carbine Buttstock.

Product Reviews

Customer Reviews 1 item(s)

FINALLY someone made a 22 lr chassis...
I bought this so I could practice with my Savage 22 long rifle and not spend a ton of money shooting with my 6.5 match gun. It is pretty expensive but well worth it if you want to effectively practice more and not break the bank. As always, MDT's customer service is amazing and was very quick to respond to questions and concerns. Thanks again Raul!
Review by Taryn / (Posted on 2/9/2017)
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