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The MDT LSS Gen3 Competitor 115017-BLK turns the CZ 457 into a purpose-built precision rimfire competition platform with a wide Competition Forend, integrated ARCA interface, extensive M-LOK mounting, adjustable shooter fit, and the modular architecture of MDT's LSS Gen3 system.
Designed for PRS Rimfire, NRL22-style competition, positional shooting, long-range rimfire, and precision training, the Competitor kit is the match-oriented configuration of the LSS Gen3 family.
Instead of piecing together a competition chassis one component at a time, the 115017-BLK gives the CZ 457 a complete modular foundation in a clean Black finish.
The 115017-BLK is configured for the right-hand CZ 457.
The chassis provides a rigid 6061 aluminum foundation for the CZ rimfire action while retaining the rifle's factory detachable rimfire magazine system.
For shooters starting with a CZ 457 Varmint, MTR, Pro Varmint, or another compatible configuration, the LSS Gen3 provides the mounting surface, adjustability, and competition ergonomics needed to move the rifle well beyond a conventional factory stock.
The defining advantage of the LSS Gen3 is its modular construction.
The barreled action remains mounted in the center chassis section while compatible forends and rear configurations can be changed around it.
That allows the rifle to evolve as the shooter changes disciplines, balance preferences, accessories, or competition setup without rebuilding the entire platform around a different chassis.
The Competitor version is built around positional and match shooting rather than minimum weight.
Its long Competition Forend provides a wide, flat support surface for barricades, bags, tripods, bipods, and other match equipment.
The result is a CZ 457 with the support geometry and mounting capability expected from a dedicated precision rifle rather than a modified sporting stock.
The LSS Gen3 Competition Forend measures approximately 14.3 inches from the recoil-lug pocket, providing a long usable surface for positional support and accessory placement.
The wide, flat profile creates a stable footprint on barricades and bags while giving the shooter more freedom to position the rifle around different stages and support surfaces.
For PRS Rimfire and NRL22-style shooting, that added forend length can make the rifle considerably easier to manage than a short hunting-style stock.
A near full-length integrated ARCA / RRS-style dovetail runs along the bottom of the Competition Forend.
Compatible bipods, tripod clamps, barricade equipment, and other ARCA-mounted accessories can be repositioned along the forend without requiring a separate bolt-on rail.
That flexibility is especially useful in positional matches where the ideal support location changes from one stage or obstacle to another.
The Competition Forend also provides extensive M-LOK mounting for weights, accessory rails, sling hardware, data-board mounts, barricade accessories, and other compatible equipment.
This gives the chassis enough flexibility to start relatively simple and become more specialized as the shooter's competition setup develops.
A competition chassis needs to provide predictable support when the rifle is placed on bags, barricades, rails, and other improvised positions.
The LSS Gen3 Competition Forend uses a wide, flat profile designed to create a stable interface with those surfaces.
That broad footprint helps reduce unwanted movement and makes the rifle easier to position consistently from stage to stage.
The 115017-BLK is particularly well suited to shooters building a CZ 457 for PRS Rimfire, NRL22-style competition, positional rimfire matches, and precision training.
The long ARCA-equipped forend makes tripod and bipod positioning straightforward, while the wide chassis profile provides useful support on barricades and bags.
The result is a CZ 457 that handles much more like a dedicated match rifle than a conventional sporting rimfire.
The CZ 457 version retains the factory CZ rimfire magazine system.
It does not convert the rifle to a centerfire AICS magazine.
Shooters can continue using compatible CZ 457 factory-pattern magazines while gaining the competition-oriented ergonomics and mounting capability of the LSS Gen3 chassis.
The Competition Forend provides clearance for barrels up to approximately 1.25 inches in straight diameter.
That leaves room for many of the heavier factory and aftermarket barrel profiles commonly used on precision CZ 457 builds.
This makes the chassis well suited to both factory heavy-barrel rifles and custom competition builds.
The LSS Gen3 system is built around 6061 aluminum, providing the rigidity needed for a precision chassis while maintaining the modularity that defines the platform.
The Black finish gives the chassis a clean, understated appearance that pairs naturally with stainless or black barrels, optics, bipods, weights, and other competition accessories.
One of the strongest reasons to choose the LSS Gen3 over a conventional one-piece chassis is the ability to change major chassis components around the center section.
Compatible forends, stock interfaces, grips, weights, bridges, and accessories can be added or changed as the rifle's role develops.
That allows the shooter to adapt the rifle around changing needs instead of replacing the entire chassis every time the setup evolves.
Precision rimfire competition rifles often benefit from deliberate weight placement rather than simply minimizing total rifle weight.
The Competition Forend provides mounting locations for compatible weights and accessories, allowing the shooter to tune how the rifle balances on barricades, bags, and other support surfaces.
The rifle can remain relatively light or be progressively tuned as the shooter's preferred balance point becomes more defined.
The Competition Forend is designed to work with additional compatible MDT competition accessories, including Control Bridge and NV Bridge configurations.
That gives shooters room to add specialized control surfaces, accessory mounting, and competition hardware without leaving the LSS Gen3 ecosystem.
The LSS Gen3 Competitor is more than a replacement stock.
The Oryx provides a straightforward aluminum precision chassis, while the XRS combines chassis rigidity with more traditional stock ergonomics.
The LSS Gen3 Competitor moves further toward a dedicated modular match rifle with a long ARCA-equipped forend, extensive accessory mounting, and greater freedom to reconfigure the rifle around changing competition needs.
Pete's Pillars is an authorized MDT dealer with extensive experience supplying components for CZ 457 and precision rimfire builds.
We stock the chassis systems, rails, bolt components, replacement parts, bipods, and accessories needed to build around the CZ 457 platform rather than treating the chassis as an isolated component.
For shooters building a CZ 457 specifically around competition and positional shooting, the LSS Gen3 Competitor provides one of MDT's most modular ways to build the rifle around that role.
Rifle, barreled action, optic, magazine, bipod, weights, bridges, and other accessories are not included unless specifically stated with the product configuration.
Pete's Pillars is an authorized MDT dealer.
The MDT LSS Gen3 Competitor 115017-BLK turns the CZ 457 into a purpose-built precision rimfire competition platform with a wide Competition Forend, integrated ARCA interface, extensive M-LOK mounting, adjustable shooter fit, and the modular architecture of MDT's LSS Gen3 system.
Designed for PRS Rimfire, NRL22-style competition, positional shooting, long-range rimfire, and precision training, the Competitor kit is the match-oriented configuration of the LSS Gen3 family.
Instead of piecing together a competition chassis one component at a time, the 115017-BLK gives the CZ 457 a complete modular foundation in a clean Black finish.
The 115017-BLK is configured for the right-hand CZ 457.
The chassis provides a rigid 6061 aluminum foundation for the CZ rimfire action while retaining the rifle's factory detachable rimfire magazine system.
For shooters starting with a CZ 457 Varmint, MTR, Pro Varmint, or another compatible configuration, the LSS Gen3 provides the mounting surface, adjustability, and competition ergonomics needed to move the rifle well beyond a conventional factory stock.
The defining advantage of the LSS Gen3 is its modular construction.
The barreled action remains mounted in the center chassis section while compatible forends and rear configurations can be changed around it.
That allows the rifle to evolve as the shooter changes disciplines, balance preferences, accessories, or competition setup without rebuilding the entire platform around a different chassis.
The Competitor version is built around positional and match shooting rather than minimum weight.
Its long Competition Forend provides a wide, flat support surface for barricades, bags, tripods, bipods, and other match equipment.
The result is a CZ 457 with the support geometry and mounting capability expected from a dedicated precision rifle rather than a modified sporting stock.
The LSS Gen3 Competition Forend measures approximately 14.3 inches from the recoil-lug pocket, providing a long usable surface for positional support and accessory placement.
The wide, flat profile creates a stable footprint on barricades and bags while giving the shooter more freedom to position the rifle around different stages and support surfaces.
For PRS Rimfire and NRL22-style shooting, that added forend length can make the rifle considerably easier to manage than a short hunting-style stock.
A near full-length integrated ARCA / RRS-style dovetail runs along the bottom of the Competition Forend.
Compatible bipods, tripod clamps, barricade equipment, and other ARCA-mounted accessories can be repositioned along the forend without requiring a separate bolt-on rail.
That flexibility is especially useful in positional matches where the ideal support location changes from one stage or obstacle to another.
The Competition Forend also provides extensive M-LOK mounting for weights, accessory rails, sling hardware, data-board mounts, barricade accessories, and other compatible equipment.
This gives the chassis enough flexibility to start relatively simple and become more specialized as the shooter's competition setup develops.
A competition chassis needs to provide predictable support when the rifle is placed on bags, barricades, rails, and other improvised positions.
The LSS Gen3 Competition Forend uses a wide, flat profile designed to create a stable interface with those surfaces.
That broad footprint helps reduce unwanted movement and makes the rifle easier to position consistently from stage to stage.
The 115017-BLK is particularly well suited to shooters building a CZ 457 for PRS Rimfire, NRL22-style competition, positional rimfire matches, and precision training.
The long ARCA-equipped forend makes tripod and bipod positioning straightforward, while the wide chassis profile provides useful support on barricades and bags.
The result is a CZ 457 that handles much more like a dedicated match rifle than a conventional sporting rimfire.
The CZ 457 version retains the factory CZ rimfire magazine system.
It does not convert the rifle to a centerfire AICS magazine.
Shooters can continue using compatible CZ 457 factory-pattern magazines while gaining the competition-oriented ergonomics and mounting capability of the LSS Gen3 chassis.
The Competition Forend provides clearance for barrels up to approximately 1.25 inches in straight diameter.
That leaves room for many of the heavier factory and aftermarket barrel profiles commonly used on precision CZ 457 builds.
This makes the chassis well suited to both factory heavy-barrel rifles and custom competition builds.
The LSS Gen3 system is built around 6061 aluminum, providing the rigidity needed for a precision chassis while maintaining the modularity that defines the platform.
The Black finish gives the chassis a clean, understated appearance that pairs naturally with stainless or black barrels, optics, bipods, weights, and other competition accessories.
One of the strongest reasons to choose the LSS Gen3 over a conventional one-piece chassis is the ability to change major chassis components around the center section.
Compatible forends, stock interfaces, grips, weights, bridges, and accessories can be added or changed as the rifle's role develops.
That allows the shooter to adapt the rifle around changing needs instead of replacing the entire chassis every time the setup evolves.
Precision rimfire competition rifles often benefit from deliberate weight placement rather than simply minimizing total rifle weight.
The Competition Forend provides mounting locations for compatible weights and accessories, allowing the shooter to tune how the rifle balances on barricades, bags, and other support surfaces.
The rifle can remain relatively light or be progressively tuned as the shooter's preferred balance point becomes more defined.
The Competition Forend is designed to work with additional compatible MDT competition accessories, including Control Bridge and NV Bridge configurations.
That gives shooters room to add specialized control surfaces, accessory mounting, and competition hardware without leaving the LSS Gen3 ecosystem.
The LSS Gen3 Competitor is more than a replacement stock.
The Oryx provides a straightforward aluminum precision chassis, while the XRS combines chassis rigidity with more traditional stock ergonomics.
The LSS Gen3 Competitor moves further toward a dedicated modular match rifle with a long ARCA-equipped forend, extensive accessory mounting, and greater freedom to reconfigure the rifle around changing competition needs.
Pete's Pillars is an authorized MDT dealer with extensive experience supplying components for CZ 457 and precision rimfire builds.
We stock the chassis systems, rails, bolt components, replacement parts, bipods, and accessories needed to build around the CZ 457 platform rather than treating the chassis as an isolated component.
For shooters building a CZ 457 specifically around competition and positional shooting, the LSS Gen3 Competitor provides one of MDT's most modular ways to build the rifle around that role.
Rifle, barreled action, optic, magazine, bipod, weights, bridges, and other accessories are not included unless specifically stated with the product configuration.
Pete's Pillars is an authorized MDT dealer.
| Brand | MDT |
| Gun Platform | CZ 457 |
| Type | Chassis |
