Build your Own LSS GEN3 Chassis

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EVERYTHING

YOU NEED TO KNOW

THE FUTURE OF MODULAR PRECISION

The MDT LSS GEN3–the most adaptable and customizable rifle chassis ever built.

Whether you're building a competition-ready precision rifle, dialling in a lightweight hunting setup, or putting together a tactical beast, this system lets you customize every detail without ever pulling your barrelled action. Swap parts, tweak your setup, and make it exactly what you need, when you need it.

THE FUTURE OF MODULAR PRECISION

The MDT LSS GEN3–the most adaptable and customizable rifle chassis ever built.

Whether you're building a competition-ready precision rifle, dialling in a lightweight hunting setup, or putting together a tactical beast, this system lets you customize every detail without ever pulling your barrelled action. Swap parts, tweak your setup, and make it exactly what you need, when you need it.

MODULAR TO THE CORE

The LSS GEN3 Chassis starts a base–a platform–a blank canvas. Swap buttstocks, grips, and forends to build your rifle exactly how you want it.

MODULAR TO THE CORE

The LSS GEN3 Chassis starts a base–a platform–a blank canvas. Swap buttstocks, grips, and forends to build your rifle exactly how you want it.

ONE RIFLE, ANY MISSION

Whether you're shooting PRS, hunting deep in the backcountry, or need a compact truck gun, the LSS GEN3 can be adapted to fit any scenario. Swap parts at will and change your rifles’ purpose.

ONE RIFLE, ANY MISSION

Whether you're shooting PRS, hunting deep in the backcountry, or need a compact truck gun, the LSS GEN3 can be adapted to fit any scenario. Swap parts at will and change your rifles’ purpose.

MAKE IT YOURS

With interchangeable components, the LSS GEN3 supports over a million possible build combinations—ensuring your rifle is uniquely yours. If you can dream it, you can build it.

MAKE IT YOURS

With interchangeable components, the LSS GEN3 supports over a million possible build combinations—ensuring your rifle is uniquely yours. If you can dream it, you can build it.

CHOOSE YOUR FOREND

The LSS GEN3 chassis allows you to select the perfect forend for your build—or run it without one. Whether you’re after the ultimate compact build, PRS-style competition performance, or tactical adaptability, we’ve got you covered.

CHOOSE YOUR FOREND

The LSS GEN3 chassis allows you to select the perfect forend for your build—or run it without one. Whether you’re after the ultimate compact build, PRS-style competition performance, or tactical adaptability, we’ve got you covered.

TACTICAL FOREND

BUILT FOR VERSATILITY

  • Full M-LOK compatibility—mount bipods, lights, grips, and accessories with ease
  • Enclosed top with integrated NV/Picatinny rail for night vision or optics mounting
  • Robust and mission-ready for tactical, duty, and hunting applications

COMPETITION FOREND

BUILT FOR PRS

  • 10” ARCA rail for ultimate bipod and tripod adjustability
  • Compatible with ACC Elite Control Bridge & NV Bridge for control and mounting solutions
  • Wider, flat profile—optimized for barricade shooting and stability
  • The best choice for precision rifle competitions

INTEGRATED FOREND

ULTRA COMPACT

  • Includes polymer forend panels for a sleek, minimal look
  • Perfect for truck guns, pistols, or ultra-light setups
  • Keeps weight down while maintaining strength

DROP-IN & SHOOT

No bedding, no gunsmithing. Just drop in your barreled action, tighten the screws, and hit the range.

DROP-IN & SHOOT

No bedding, no gunsmithing. Just drop in your barreled action, tighten the screws, and hit the range.

KEEP YOUR ZERO

Change out your forend, buttstock, or grip without ever pulling your barreled action. No loss of zero, no wasted time.

KEEP YOUR ZERO

Change out your forend, buttstock, or grip without ever pulling your barreled action. No loss of zero, no wasted time.

INTERCHANGEABLE FORENDS

CUSTOMIZABLE BUTTSTOCK INTERFACE

INTERCHANGEABLE BUTTSTOCKS

AICS MAGAZINE COMPATIBLE

AMBIDEXTROUS MAGAZINE LATCH

V-BLOCK BEDDING

INTEGRATED BARRICADE STOP

COMPATIBLE WITH M-LOK THUMB SHELF

COMPATIBILTY

Logo of Remington in green text.

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

  • Bergara B14
  • Bergara Premier
  • Weatherby Model 307
  • Most Remington 700 LA Clones

Mag Length: Long Action 3.850"

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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

Savage AXIS SHORT ACTIOn

  • Savage Axis Compact
  • Savage Axis XP
  • Savage Axis XP Compact
  • Savage Axis XP Camo
  • Savage Axis XP Compact Camo
  • Savage Axis II XP
  • Savage Axis XP FDE
  • Savage Axis XP 4-12x40
  • Savage Axis XP Compact 4-12x40
  • Savage Axis Compact Muddy Girl
  • Savage Axis XP Stainless
  • Savage Axis II
  • Savage Axis II Compact
  • Savage Axis II XP
  • Savage Axis II XP Stainless
  • Savage Axis II XP Hardwood
  • Savage Axis II XP Compact
  • Savage Axis II XP Compact Muddy Girl
  • Savage Axis II XP FDE
  • Savage Axis II XP VSX Camo
  • Savage Axis II SR FDE
  • Savage Axis II XP Gray Stainless Steel
  • Savage Axis XP FDE Web Compact
  • Savage Axis XP Web
  • Savage Axis XP Web Camo ODG
  • Savage Axis II Bottomland Camo
  • Savage Axis II XP Terra Gila Camo
  • Savage Axis II XP SR HB
  • Savage Axis II XP VSX Camo Compact
  • Savage Axis II Bottomland Original
  • Savage Axis II Stainless Steel
  • Savage Axis II HB SR Wideland Compact
  • Savage Axis II XP SR VSX Camo

Mag Length: Short Action AICS Pattern

Savage AXIS LONG ACTIOn

  • Savage Axis XP

Mag Length: Long Action 3.560"

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TIKKA T3/T3X 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

TIKKA T3/T3X LONG ACTION

  • T3x Battue Lite
  • T3x Forest
  • T3x Hunter
  • T3x Laminated Stainless
  • T3x Lite
  • T3x LITE ROUGHTECH
  • T3x LITE SUPERLITE

Mag Length: Long Action 3.560"

TIKKA T1X

  • Tikka T1x Hunter
  • Tikka T1x MTR
  • Tikka T1x UPR

Uses factory rimfire magazines

TIKKA T3/T3X SHORT ACTION - LEFT HANDED

  • Tikka T3/T3X Compact Tactical Rifle (CTR)
  • Tikka T3/T3X Hunter
  • Tikka T3/T3X Lite
  • Tikka T3/T3X Lite Roughtech
  • Tikka T3/T3X Lite Veil
  • Tikka T3/T3X Sporter
  • Tikka T3/T3X Superlite
  • Tikka T3/T3X TACT A1 (requires full removal of factory chassis)
  • Tikka T3/T3X Varmint

Mag Length: Short Action AICS Pattern

HOWA 1500 SHORT ACTION

  • Howa 1500 American Flag Chassis
  • Howa 1500 Carbon Flag Chassis
  • Howa 1500 Carbon Elevate
  • Howa 1500 Carbon Fiber
  • Howa 1500 Caron Stalker
  • Howa 1500 Gamepro 2.0
  • Howa 1500 Hogue
  • Howa 1500 H-S Precision
  • Howa 1500 Hera
  • Howa 1500 TSP-X
  • Weatherby Vanguard Badlands
  • Weatherby Vanguard Camilla
  • Weatherby Vanguard Camilla Wilderness
  • Weatherby Vanguard Compact Hunter
  • Weatherby Vanguard First Lite Specter
  • Weatherby Vanguard Spike Camp
  • Weatherby Vanguard Sporter
  • Weatherby Vanguard Synthethic
  • Weatherby Vanguard Synthetic Compact
  • Weatherby Vanguard Synthetic Green
  • Weatherby Vanguard Talon
  • Weatherby Vanguard Talus
  • Weatherby Vanguard
  • Weather Guard Bronze
  • Weatherby Vanguard Bass Pro shops and Cabela's
  • Weatherby Vanguard Sportsman Warehouse
  • Weatherby Vanguard First lite Cipher
  • Weatherby Vanguard Hush Edition
  • Weatherby Vanguard Laminate Sporter
  • Weatherby Vanguard Obsidian
  • Weatherby Vanguard Outfitter

Mag Length: Short Action AICS Pattern

HOWA 1500 LONG ACTION

  • Howa 1500 Carbon Stalker
  • Howa 1500 Hogue Gamepro 2.0
  • Howa 1500 Houge Rifle
  • Howa 1500 Traditional Walnut
  • All Weatherby Vanguard LA Variants

Mag Length: Long Action 3.715"

HOWA MINI

  • How Mini Action Full Dip
  • Howa Mini Action Rifle
  • How Mini EXCL Lite

     

Uses factory rimfire magazines

Ruger logo with red text and a stylized emblem.

RUGER AMERICAN SHORT ACTION

  • Ruger American GEN Standard
  • Ruger American GEN2 Ranch
  • Ruger American GEN2 Predator
  • Ruger American Standard
  • Ruger American Predator
  • Ruger American Ranch
  • Ruger American Go Wild Camo I-M Brush Stock
  • Ruger American Rifle Hunter
  • Ruger American Rifle Compact
  • Ruger American Rifle With Vortex Crossfire II Scope
  • Ruger American Hawkeye Hunter
  • Ruger American Hawkeye Long-Range Hunter
  • Ruger American Hawkeye Long-Range Target
  • Ruger American Hawkeye Predator
  • Ruger American Hawkeye Compact
  • Ruger American Hawkeye Laminate Compact

Mag Length: Short Action AICS Pattern

RUGER AMERICAN LONG ACTION

  • Ruger American Gen 2 Standard
  • Ruger American Gen 2 Ranch
  • Ruger American Gen 2 Predator
  • Ruger American Standard
  • Ruger American Go Wild Camo I-M Brush Stock
  • Ruger American Rifle with Vortex Crossfire II Scope

Mag Length: Long Action 3.751"

RUGER 10/22

  • Ruger 10/22 Carbine
  • Ruger 10/22 Carbon Fiber
  • Ruger 10/22 Sporter
  • Ruger 10/22 Competition *requires removal of rear tang*
  • Ruger 10/22 Target
  • Ruger 10/22 Tactical
  • Ruger 10/22 Compact
  • Dlask Arms TUF22
  • Kidd Aftermarket Classic Slip Fit
  • Kidd Aftermarket Supergrade
  • Spectre Ballistics C-71
  • Spectre Ballistics ST-22 *Charging handle may have limited access*
  • Spectre Ballistics C-71 Precision 12
  • Spectre Ballistics C-71 Precision 16
  • Spectre Ballistics C-71 Sport 16
  • Spectre Ballistics ST-22 Precision 12 *Charging handle may have limited access*
  • Tactical Innovations Elite22D
  • Tactical Innovations Elite22

Uses factory rimfire magazines

RUGER AMERICAN AR SHORT ACTION

  • Ruger American Gen 2 Ranch
  • Ruger American Gen 2 Predator

Mag Length: AR

RUGER M77 SHORT ACTION

  • Ruger Scout Rifle

Mag Length: Short Action AICS Pattern

Logo of a coffee brand with stylized text and graphic elements.

CZ 457

  • CZ 457 American
  • CZ 457 American Synthetic Suppressor-Ready
  • CZ 457 Jaguar
  • CZ 457 LUX
  • CZ 457 Premium
  • CZ 457 Pro Varmint Suppressor-Ready
  • CZ 457 Royal
  • CZ 457 Scount
  • CZ 457 Varmint
  • CZ 457 Varmint AT-ONE
  • CZ 457 Varmint MTR
  • CZ 457 Manners MTR
  • CZ 457 Chassis

Uses factory rimfire magazines - Use 18" or longer barrel

SPECIFICATIONS

GRIP COMPATIBILITY

AR-15 style grips

MATERIALS & FINISH

6061 aluminum, Cerakote finish Polymer side panels

MAX BARREL DIAMETER

1.25” straight diameter barrel