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The MDT LSS Gen3 Competitor Chassis Kit for Remington 700 Long Action is a pre-assembled modular chassis system built specifically for shooters who want a competition-ready rifle foundation without the research and part-matching that usually eats up months. If you're running PRS, NRL, or other precision competitions, this right-hand kit arrives configured and ready to compete—no guesswork on component selection, no mismatched accessories slowing your build. The LSS Gen3 has earned its reputation for modularity in the precision rifle world; this Competitor version channels that flexibility into a locked-in package optimized for stages.
Competition shooting demands stability and speed in equal measure. The chassis features a flat, wide competition forend with integrated ARCA rail, letting you lock in tripods and bipods without fuss. The forend spans 14.32 inches from the recoil lug pocket, giving you the real estate to get solid behind barricades and natural shooting positions. Built from 6061 aluminum with a Cerakote finish, the chassis handles the abuse of match day and practice without flex or zero shift. At 4.6 pounds, you're carrying a substantial platform without unnecessary weight.
True modularity means you're not locked in. Once you hit the range, swap the grip, upgrade the buttstock, add weight for tune, or bolt on rail accessories—the architecture supports all of it. The kit includes everything you need to start shooting: the LSS Gen3 chassis body, trigger guard, Elite XTN vertical grip, Competition Forend, SRS-X Lite buttstock, and the action screws to get your Remington 700 Long Action locked down tight. This is a Remington 700 LA-specific platform that accepts barrels up to 1.25 inches straight diameter.
If you've been eyeing the LSS system but didn't want to assemble and spec out each component individually, the Competitor Kit does that legwork for you. You get a precision chassis with a proven track record, pre-configured for the demands of modern competition rifle shooting.
| Brand | MDT |
| Product | LSS Gen3 Competitor Chassis Kit |
| Orientation | Right-Hand |
| Compatibility | Remington 700 Long Action |
| Max Barrel Diameter | 1.25" straight diameter |
| Forend Length (recoil lug pocket) | 14.32" |
| Material | 6061 Aluminum |
| Finish | Cerakote |
| Weight | 4.6 lbs |
| Included Hardware | 2x 1/4"-28 x 1" Socket Head Cap Screws |
The kit ships with the LSS Gen3 chassis body, trigger guard, Elite XTN vertical grip, Competition Forend with integrated ARCA rail, SRS-X Lite buttstock, and action screws (2x 1/4"-28 x 1" socket head cap). Everything you need to mount your Remington 700 Long Action and start shooting.
The LSS Gen3 is fully modular. You can swap the grip, replace the buttstock, add weights and bridges, or install rail accessories as your competition needs change. The foundation is solid, but you maintain complete control over the final configuration.
The LSS Gen3 Competitor Kit accommodates barrels up to 1.25 inches in straight diameter, which covers most precision rifle barrels used in competition shooting.
The kit is optimized for competition with its wide forend and ARCA rail design, though the underlying LSS Gen3 platform is modular enough to be configured for hunting or tactical applications if you choose different stock and grip components.

SKU: 194199077 • Weight: 5.5oz