The MDT LSS GEN3 Base is where customization begins. This stripped-down chassis gives you the essential core, allowing you to build your rifle exactly how you want it. Whether you're setting up for competition, hunting, or tactical use, the LSS GEN3 Base is your starting point for a precision build.
THE FOUNDATION
OF YOUR BUILD
MODULAR AT ITS CORE
Start with the LSS GEN3 Base and add your choice of forend, buttstock interface, buttstock, and grip to fit your needs.
AN UPGRADE PATH
LIKE NO OTHER
The LSS GEN3 Base is just the beginning. Want to go from a lightweight hunting rifle to a fully weighted competition rig? Swap out the forend, and add some weights. Need a different buttstock for better ergonomics? Just attach a new one. With support for multiple forends, buttstock interfaces, and accessories, you can evolve your rifle as your needs change. One chassis, endless possibilities.
SIMPLE DROP-IN
INSTALLATION
No gunsmithing required—just drop in your barreled action, secure it, and you’re good to go.
SIMPLE DROP-IN
INSTALLATION
No gunsmithing required—just drop in your barreled action, secure it, and you’re good to go.
NO RE-ZEROING
Change parts without pulling your action. Keep your zero, save time.
LIGHTWEIGHT & STRONG
Built from 6061 aluminum with a durable Cerakote finish, the LSS GEN3 Base balances strength and weight.

Core chassis only: add your own forend, buttstock interface, buttstock, and grip

AICS magazine compatible

Supports Carbine, XTN, and Picatinny buttstock interfaces (sold separately)

side panels installed on the chassis base

Remington 700 Short Action
- Bergara B14
- Bergara B14r
- Bergara Premier
- Weatherby Model 307
- Remington Model 700 Alpha 1 Hunter
- Remington Model 700 SPS
- Remington Model 700 SPS Varmint
- Remington Model 700 Sendero SF II
- Remington Model 700 SPS Stainless
- Remington Model 700 Varmint SF
- Remington Model 700 SPS Tactical
- Remington Model 700 SPS Tactical Threaded
- Remington Model 700 CDL SF
- Remington Model 700 CDL
- Remington Model 700 BDL
- Remington Model 700 Long Range
- Remington Model 700 Magpul Enhanced
- Remington Model 700 ADL
- Remington Model 700 ADL Varmint
- Remington Model 700 VTR
- Bergara Premier MGLITE
- Bergara MGMICRO LITE
- Bergara Premier Divide
- Bergara Premier Canyon
- Bergara Premier Competition
- Bergara Premier HMR PRO
- Bergara B-14 Squared Crest
- Bergara B-14 Squared Crest Carbon
- Bergara B-14 HMR Carbon Wilderness
- Bergara B-14 Ridge Carbon Wilderness
- Bergara B-14 Wilderness HMR
- Bergara B-14 Wilderness Ridge
- Bergara B-14 Wilderness Terrain
- Bergara B-14 Wilderness Sierra
- Bergara B-14 Wilderness Hunter
- Bergara B-14 HMR
- Bergara B-14 Ridge
- Bergara B-14 Stoke
- Bergara B-14 Timber
- Bergara B-14 Hunter
- Bergara B-14R Steel
- Bergara B-14R Carbon
- Bergara The Sidekick
- Bergara M40-ISH
- Bergara Premier Mountain 2.0
- Bergara Premier Highlander
- All Remington 700 SA Clones
Mag Length: Short Action AICS Pattern

Remington 700 Long Action
- Weatherby Model 307
- Most Remington 700 LA Clones
Mag Length: Long Action 3.715"

TIKKA Short Action
- Tikka T3x Arctic
- Tikka T3x Battue Lite
- Tikka T3x Compact
- Tikka T3x CTR
- Tikka T3x Forest
- Tikka T3x Hunter
- Tikka T3x Laminated Stainless
- Tikka T3x Lite
- Tikka T3x Lite Roughtech
- Tikka T3x Lite Veil
- Tikka T3x Sporter
- Tikka T3x Super Varmint
- Tikka T3x Superlite
- Tikka T3x Tact A1
- Tikka T3x UPR
- Tikka T3x Varmint
Mag Length: Short Action AICS Pattern

Savage Short Action
- Savage 110 Varmint
- Savage 110 Hunter
- Savage 110 Storm
- Savage 110 Predator
- Savage 110 Tactical
- Savage 110 Tactical Desert
- Savage 110 Long Range Hunter
- Savage 110 High Country
- Savage 110 Haymaker
- Savage 110 Bear Hunter
- Savage 110 Hog Hunter
- Savage 110 Lightweight Storm
- Savage 110 Classic
- Savage 110 Apex Hunter XP
- Savage 110 Apex Hunter XP Left-Hand
- Savage 110 Apex Hunter Muddy Girl
- Savage 110 Apex Storm XP
- Savage 110 Apex Predator XP
- Savage 11 Lady Hunter
- Savage 12 Long Range Precision
- Savage 12 BTCSS
- Savage 12 Varminter Low Profile
- Savage 12 BVSS
- Savage 110 Elite Precision
- Savage 110 Precision
- Savage 110 Carbon Tactical
- Savage 110 Carbon Tactical FDE
- Savage 110 Apex Hunter XP SR Poseidon
- Savage 110 Hunter XP
- Savage 110 Carbon Predator
- Savage 110 VT Hunter XP
- Savage 110 Trail Hunter
- Savage 110 KLYM
- Savage 110 Magpul Scout
- Savage 110 Magpul Scout FDE
- Savage 12 FV
- Savage 10 FP
- Savage 10 FP-SR
- Savage 10 FCP
- Savage 10 FCP HS Precision
- Savage 10 FCP McMillian
- Savage 10 FCP-K
- Savage 10 TR
- Savage 10 TR-SR
- Savage 12 VSS
- Savage 14 American Classic
- Savage 11 Hunter XP
- Savage 11 Hog Hunter
- Savage 11 Lightweight Hunter
- Savage 110 Ultralite
- Savage 110 Ultralite Camo
- Stevens 200
Mag Length: Short Action AICS Pattern
SPECIFICATIONS
Dimensions
13.09” x 1.61” x 2.3”
Forend Length (from recoil lug pocket)
5.6”
Weight
1.36lbs (22oz)
Material
6061 aluminum, Cerakote finish

WHAT YOU GET

lss GEN3 Chassis body

Trigger guard