MDT LSS-RF Gen 2 Rifle Chassis System for Rimfire Rifles

(1 customer review)

$629.00 inc. GST

SKU: N/A Category: Brand:

Our LSS-RF (Rimfire) Gen 2 Chassis is based on our popular LSS Chassis system for rimfire rifles. The LSS-RF also fits 17 HMR or 22 WMR versions (with the exception of the Savage A22 and A22R which will only fit the 22LR variants)

The LSS-RF next generation has arrived!

Created for popular .22LR caliber rifles, the LSS-RF Gen2 brings the addition of the following new features:

  • M-Lok pattern attachment slots on sides and bottom of the forend
  • Barricade-stop grooves ahead of mag-well
  • Side-relieved mag well

NOTE: This listing is for the Chassis body ONLY. Does not come with buttstock, grip, magazine, scope or any of the other accessories in photos.


Don’t forget to check out our ATP Limbsaver Recoil Pad and Adaptor for the MDT chassis/buttstocks at the following link, one of the best upgrades you can have for shooting comfort:


M-LOK accessories are available here:

Don’t forget to purchase your Castle nut wrench here:



Our LSS-RF chassis system for .22LR caliber rifles is lightweight and compact, and adopts the same footprint as the LSS. 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 carbine type buttstocks. Fixed buttstocks can also be mounted with the use of a fixed stock adapter.

The LSS-RF uses the 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 can use iron sights with this chassis. If you are using a scope, we recommend a stock with a cheek riser.


  • The Savage Mark II, CZ 455 and Ruger American can use iron sights
  • The Savage A22 and A22R will only fit 22LR models
  • The CZ455 will not work with the CZ455 Tuning trigger
  • The Anschutz Match 54 will only fit actions with 177mm action screw spacing such as the 1710/1712


The LSS-RF chassis is designed to accept carbine buttstocks and pistol grip (purchased separately), and allows for customization with a wide variety of accessories.

M-Lok pattern attachment slots on sides and bottom of the forend


  • Up to 21% increase in accuracy
  • CNC Machined from 6061 aluminum
  • Cerakote Finish (in Black or Flat Dark Earth)
  • M-LOK compatible
  • Designed for carbine 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 on Hogue stock)
  • Compatible with OEM Magazines
  • Weight: 1.4lb – 1.6lb


The LSS-RF 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 carbine buttstock or our Skeleton Carbine Stock. For fixed buttstocks such as the Skeleton Rifle Stock V5 you will need the fixed stock adapter.
  • A buffer tube for your buttstock (both mil-spec and commercial work with our chassis) NOTE: If you purchase an MDT buttstock this includes the buffer tube so you won’t need to purchase an additional one.
  • An AR-15 pistol grip. Ideally without a beavertail, or with a soft (bendable) beavertail
  • Your original factory magazine


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

  • Anschutz Match 54 – Right Handed (Measure your action screw spacing before purchasing, this will only fit actions with 177mm spacing such as the 1710/1712)
  • CZ 455 – Right Handed
  • CZ 457 – Right Handed
  • Ruger American Rimfire – Right Handed
  • Savage A22 – Right Handed (also fits the A22R Lever Release) Note: will only fit 22LR variants
  • Savage B22 – Right Handed
  • Savage Mark II (also compatible with 93R17) – Right Handed
  • Tikka T1x – Right Handed

The LSS-RF now also fits 17 HMR or 22 WMR versions and will fit all heavy factory barrels (with the exception of the A22 variant which will only fit 22LR)

ATP is an authorised Australian dealer for MDT. All MDT products bought from ATP are covered by the Australian MDT Warranty.

Weight 0.9 kg

Anshutz Match 54, RH, Anshutz Match 64, RH, Browning T-Bolt, RH, CZ 452, RH, CZ 455, RH, CZ 457, RH, Ruger American Rimfire, RH, Savage A22, RH, Savage B22, RH, Savage MK II, RH, Tikka T1x, RH


Black, Flat Dark Earth

1 review for MDT LSS-RF Gen 2 Rifle Chassis System for Rimfire Rifles

  1. Kenneth Chaw (verified owner)

    Easy to install, better ergonomics and stunning appearance.

Only logged in customers who have purchased this product may leave a review.

Product Enquiry

Shopping Cart
Scroll to Top