MDT LSS-XL Gen 2 Main Base (Chassis) – Chassis Only – Carbine Stock Interface
Increase accuracy and ergonomics of your rifle with our LSS-XL Gen2 chassis system. The LSS-XL Gen2 is a longer and more feature-rich version of our LSS chassis system. The LSS-XL Gen2 has been updated with a bold, modern new look inspired by the popularity of the ESS chassis line, while maintaining and improving upon the overall aesthetic of an MDT chassis.
The LSS-XL Gen2 allows you to convert your bolt action rifle to a highly versatile rifle allowing you to adjust the ergonomics with the use of AR-15 buttstocks and grips, and at the same time converting it to an external box magazine fed rifle. Shoot Better.
The LSS-XL Gen2 comes in a FIXED or CARBINE option depending on buttstock preference. Read more information about FIXED and CARBINE interfaces.
Please note, buttstock, magazine and grip are not included.
Available in the following colours: Black or FDE
Pricing varies from $810 to $890
Please see full price range below:
Remington 700 – Short Action – Black or FDE = $810
Remington 700 – Long Action – Black or FDE = $890
Savage 10,11, 12, 16 – Short Action – Black or FDE = $810
Savage 110,111, 112, 116 – Long Action – Black or FDE = $890
Tikka T3/T3x – Short Action – Black or FDE = $810
Tikka T3/T3x – LEFT HAND – Short Action – Black = $810
Tikka T3/T3x – Long Action – Needs 3.56 Mag – Black or FDE = $890
Howa Mini Action – Short Action – Uses factory mag – Black or FDE = $890
Howa 1500 – Short Action – Needs MDT poly/poly-metal mag – Black or FDE = $810
Howa 1500 – Long Action – Black or FDE = $890
Ruger American AI – Short Action – Uses AICS Mag – Black or FDE = $810
Ruger American AI – LEFT HAND – Short Action – Uses AICS Mag – Black = $810
Ruger American AR – Short Action – AR15 Mag compatible with factory AR15 bottom metal – Black or FDE = $810
Lithgow 102 – Short Action – Black or FDE = $810
CZ 527 .223 – Short Action – Black = $810
The original LSS-XL Gen2 chassis system was designed as a variant of our highly popular LSS chassis. The LSS chassis was designed for use with compact, short barrelled rifles. Many customers liked the LSS chassis, but wanted to use a fixed buttstock, and get their bipod out further forward.
This prompted us to design the first-generation LSS-XL chassis system, which has a forend extended by 3″ and was designed to accept fixed rifle stocks without the need of using any adapters.
After the successful launch of our ESS chassis system, requests started pouring in for the new features that had been introduced on the ESS chassis to be rolled out on our other chassis systems. In response, we have upgraded our LSS-XL chassis line with a Gen2 lineup that incorporates the following new features:
- Bold, modern new look
- Ambidextrous magazine release
- Thumbrest above trigger guard
- Larger barrel channel to accommodate barrels up to the diameter of the action
- M-Lok pattern attachment slots on all five sides of the forend
- Barricade-stop grooves ahead of mag-well
- Side-relieved mag well to accommodate bulging magazines
- Carbine and fixed buttstock interface options
The chassis is designed with V-shaped bedding surfaces, allowing you to drop your rifle right in without the need for additional bedding. The bottom profile of the V-block cutout has been kept round and close to the action without making contact, maintaining maximum strength. The LSS-XL Gen2 chassis will free float barrels up to 1.350” diameter.
The LSS-XL Gen2 chassis are designed to accept any AR-15 buttstock and pistol grip (purchased separately), offering the option to customize from the wide variety of Accessories available on the market.
The LSS-XL Gen2 chassis accepts AICS-pattern external box magazines, and supports the installation of M-Lok patterned accessories along the forend.
Note: Long action magazines come in 4 different lengths: 3.560”, 3.715″, 3.775″ and 3.850″. Unless otherwise specified, our long action chassis use 3.715 length magazines.
The chassis will accept recoil lugs up to .350″ (8.9mm) thick.
- Increases accuracy by up to 21%
- CNC Machined from 6061 Aluminum
- Cerakote finish in Black or Flat Dark Earth
- M-Lok pattern attachment system on all 5 faces of the forend
- Carbine buttstock interface option designed for carbine AR-15 buttstocks, including the MDT Skeleton Carbine Stock
- Fixed buttstock interface option designed for fixed AR-15 buttstocks, optimally the MDT Skeleton Rifle Stock V5
- Accepts most AR-15 Pistol Grips
- Lightweight, free-floating modular forend
- Will accommodate barrels up to 1.350″ diameter
- Compatible with AICS style magazines
- Weight: 1.6lb – 2.0lb, depending on the rifle model
HOWA 1500 / WEATHERBY VANGUARD ACTIONS
Only our polymer magazines will work in the short action rifles due to the flat bottom. The long action rifles will work with the metal 3.715″ magazines without fitting. For .223 models the bolt stop prevents the bolt from moving back far enough to pick up the rounds. This can easily be modified by removing the bolt stop and trimming the contact face.
LITHGOW 102 SA
For .223 models the bolt stop may be too long. This can easily be modified by removing the bolt stop and trimming the contact face.
SAVAGE MODELS 10/110 11/111 12/112 16/116
For rifles with the bolt release at the bottom, the bolt release can be engaged through the side of the chassis, using a pin or tool. (Not included)
SAVAGE LONG ACTION IN 338 LAPUA MAGNUM
Savage Long Action chassis systems all use 3.715″ AICS magazine wells. The BA in 338 Lapua Magnum uses 3.850″ magazines and have recently switched to a thicker recoil lug which will not fit our chassis. The ESS has been specifically designed around the current BA 110 in 338 Lapua Magnum.
TIKKA T3 – LONG CALIBERS
Only our Metal 3.560 magazine will fit with the chassis for this action and needs to be purchased separately.
The action screw is located directly above the magazine lever. This means that the magazine lever needs to be installed AFTER installing the action into the chassis. Detailed instructions are provided, and an installation video can be found here. Ruger American in 223/5.56mm requires the use of a magazine with extended feed lips, such as the #90458 Ruger Mag. This is to prevent the round from being released before entering the chamber.
Does not work with 300 Blackout
This chassis will also accept the Predator and Ranch versions. Please read the notes above regarding magazines for 223/5.56 rifles.