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MDT LSS-XL Chassis Tikka T3 Long Action View full size

MDT LSS-XL Chassis Tikka T3 Long Action

Increase accuracy and ergonomics with out LSS-XL chassis system. The LSS-XL is a longer version of our LSS chassis system. The fore end has been extended by 3", and is designed to take fixed buttstocks without the need of an adapter.

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DETAILS

LSS V-shaped beddingCut view of chassis showing flat spots where the action touches the chassis.

The LSS-XL chassis system is a variant of our highly popular LSS chassis. The LSS chassis was designed for compact use, short barrelled rifles. A large amount of customers really liked the LSS chassis, but wanted to use a fixed buttstock, and use it with longer barrel systems. 

This prompted us to design the LSS-XL chassis system which has a fore-end extended by 3" and is designed to accept fixed rifle stocks without the need of using any adapters. In addition the Lengt of Pull (LOP) is 1" shorter than the standard LSS, as fixed rifle stocks generally are longer than collapsible.

The chassis is designed with v-shaped bedding, allowing you to drop your rifle right in without the need for additional bedding. The bottom of the action housing has been kept round and close to the action without touching keeping maximum strength. The chassis also free floats barrels up to 1" in diameter at the muzzle end.

Recoil lug area allows for thicker lugs.

IMPORTANT NOTES:

Using our Skeleton Rifle Stock V2 - We do not recommend using our Skeleton Rifle Stock V2 on the LSS-XL. It will work on our LSS using the fixed stock adapter. But on the LSS-XL with a shorter Length of Pull the cheek riser will be in the way of the bolt. (it does work on some actions if the cheek riser is raised). We will be releasing Skeleton Rifle Stock V3 soon, which will work perfectly with the LSS-XL!

Please note important action specific information at the bottom of this page.

MOUNTING AND COMPATIBLE ACCESSORIES

The LSS chassis is designed to accept any AR-15 butt-stock and pistol grip (purchased separately), offering the option to customize from the wide variety of  Accessories available on the market.

The LSS chassis uses external box style magazines in .223 and .308 caliber for Short Action and .300WM or .338LM magazines for Long Action rifles, 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.

Note: Long action magazines come in 3 different lengths: 3.715", 3.775" an 8.050". Our chassis use 3.715 length magazines.

SPECIFICATIONS

  • Increases accuracy by up to 21%
  • CNC Machined from 6061 Aluminum
  • Cerakote Finish in Black or Flat Dark Earth
  • Hole spacing for Magpul L5(11slot) and L3(7slot)Rails
  • Designed for fixed AR-15 buttstocks, including Skeleton Rifle Stock V3
  • Accepts most AR-15 Pistol Grips
  • Lightweight, free-floating modular fore-end
  • Will accommodate barrels up to 1" diameter.
  • Compatible with AICS style magazines in .223 or .308 (SA) and 300WM, 30.06, 338LM (LA). (Long Action Magazine length 3.715)
  • Weight: 1.8lb - 2.1lb

WHAT YOU GET, AND WHAT YOU NEED

The LSS-XL 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. (Fixed stocks are best suited. For Collapsible stocks consider our LSS Chassis)
  • A buffer tube for your buttstock. (Both milspec and commercial work on our chassis)
  • An AR-15 Pistol Grip. Ideally without a beavertail, or use a soft (bendable) beavertail.
  • At least one magazine

Please also see our HS3 Chassis System.

IMPORTANT NOTES

Howa 1500 / Weatherby Vanguard actions
This is the only action that we manufacture a chassis for, that has a flat bottom action. For this reason only our Polymer magazines will work. It will be a tight fit, and the magazine may need to be modified slightly for a good fit and proper feeding.
For .223 models the bolt stop may be too long. This can easily be modified.

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)

Tikka T3 - Long Calibers
Only our Metal 3.56 magazine will fit with the chassis for this action and needs to be purchased separately.

Savage Axis
The original recoil lug that comes with the rifle is required for installation into the chassis.

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MDT LSS-XL Chassis Tikka T3 Long Action

MDT LSS-XL Chassis Tikka T3 Long Action

Increase accuracy and ergonomics with out LSS-XL chassis system. The LSS-XL is a longer version of our LSS chassis system. The fore end has been extended by 3", and is designed to take fixed buttstocks without the need of an adapter.

Write your review