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Questions & Answers
What is the longest mdt Arca rail that will work with this chassis? Manufacturer Answer

Our 10.25" M-Lok ARCA rail will work.

by MDT Sporting Goods, Manufacturer, August 20, 2025
I bought one of this for my Cz 457 rifle, it came with two small screws with copper color nipples, what are they for?

They're for incase you'd rather have set screws for the adjustable cheek rest instead of the quick adjust finger wheel set screws that are already on it. If so, you just unscrew the finger wheels and screw in those set screws instead.

by Jesse, Verified Owner, December 20, 2024

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Product Info for MDT XRS Chassis

The XRS Chassis is designed for shooters that want the fit and feel of a traditional shaped rifle stock with the benefits of a modern precision rifle chassis system. Each XRS Chassis is constructed from a full-length CNC machined core of 6061 aircraft grade aluminum wearing high strength textured polymer panels for insulation from the elements. The precision aluminum V-block bedding system ensures fit and function to maximize the accuracy of any rifle action. The XRS Chassis features a replaceable over molded and textured grip system, with both an angled grip and a vertical grip included in box. The XRS Chassis is the most advanced and configurable crossover stock on the market and is the ideal performance upgrade for any factory rifle or foundation for a custom rifle build. Weighing in at 3.9lbs (depending on inlet), the XRS is ideal for both hunting or target rifles. The XRS features adjustable length of pull via spacers from 13.25 to 15+ and a quick adjust cheek piece to adjust for scope height over bore. The XRS accepts standard AICS pattern magazines and has an easy to manipulate ambidextrous magazine latch. The generous 12 long Forend comes with M-LOK slots built in for accessory mounting and attachment of ARCA or picatinny rails.image

Specifications for MDT XRS Chassis:

Manufacturer: MDT
Color: Black
Chassis Material: Aluminum
Hand: Right
Length: 13 - 15 in
Condition: New

Package Contents:

  • MDT XRS Chassis

MDT XRS Chassis Orderable Models

List of Orderable Models

  • MDT 105051BLK XRS Chassis Black Aluminum Core with Polymer Panels, Adj. Cheekrest, M-LOK Forend, Interchangeable Grips, AICS Mag Compatible, Fits CZ 457, 105051BLK , MPN: 105051BLK , UPC: 682157402236 , Code: 3JN-RS0-105051BLK-105051BLK
  • MDT 105524BLK XRS Chassis FDE Aluminum Core with Polymer Panels, Adj. Cheekrest, M-LOK Forend, Interchangeable Grips, Fits Tikka T1X, 105524BLK , MPN: 105524BLK , UPC: 682157404940 , Code: 3JN-RS0-105051BLK-105524BLK
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Last updated 2026-06-22 UTC.