MDT XRS CHASSIS SYSTEM | CZ 457 | BLACK | 105051-BLK
The Most Underrated Chassis MDT Makes.
The MDT XRS is built for shooters who want the fit and feel of a traditional rifle stock with the adjustability of a modern precision chassis. A full-length 6061 aircraft-grade aluminum core runs the length of the stock under textured polymer panels, with an aluminum V-block bedding system, an adjustable cheek piece, spacer-adjustable length of pull and a 12″ forend. This is the CZ 457 right-hand inlet in Black.
The CZ 457 is the rimfire action serious shooters keep coming back to, and plenty of them are still sitting in a factory stock that gives up most of that potential. The XRS fixes the fit: cheek height to get your eye behind the scope, length of pull set to you instead of the average of everybody, V-block bedding under the action, and a forend with somewhere to mount a bipod. It still shoulders like a rifle stock, so it works for a walk in the woods and a match day both. About 3.9 lbs depending on inlet. Use it for: NRL22, PRS rimfire, rimfire steel, .22 trainers, small game, and any 457 build that has outgrown its wood.
Fit You Can Dial In.
Length of pull adjusts with spacers from 13.25″ to 15″+, so the same rifle can fit you in a t-shirt and in a winter coat, or fit a kid now and still fit them in three years. The quick-adjust cheek piece sets scope height without tools, which matters most when you're switching between prone and awkward positional shooting. The grip is a replaceable overmolded system, and MDT includes both an angled and a vertical grip in the box, so you can decide which one suits your shooting without buying anything extra.
A 12″ Forend to Build On.
The 12″ forend gives you room to work: somewhere to add weight, a bipod or a barricade stop, and enough length to put your support where the position needs it instead of where the stock allows. It also has an ambidextrous magazine latch, so left-handed shooters aren't working around the chassis.
Why We Recommend the XRS.
The dedicated competition chassis get the attention, and we sell plenty of them. But the XRS offers something a lot of CZ 457 owners actually want more: versatility. It keeps the familiar feel and traditional look of a conventional rifle stock while giving you a full aluminum chassis underneath. You can hunt with it, compete with it, and keep changing it without committing the rifle to one discipline. For most people who own one CZ 457 rather than three, that's the right trade.
One Rifle, Several Jobs.
- NRL22 and PRS Rimfire: rigid aluminum construction, adjustable ergonomics and modular weight for positional stages.
- Small game hunting: traditional stock geometry and textured gripping surfaces, at a weight you'll carry.
- Precision target shooting: cheek height and length of pull set once, repeatable every time you get behind the rifle.
- All-around rimfire builds: keep it streamlined for the field, or add weights and ARCA as the shooting changes.
Our Take
We Machine Mini Weights Specifically for the XRS
A light rimfire rifle is a twitchy rimfire rifle. Our PPWM mini forend weights are made specifically for the MDT XRS, in a 6 oz 2-pack, so you can settle the rifle down without turning it into something you don't want to carry all afternoon. Want more weight than that out front? Our 12.3 oz exterior forend weights go heavier, and MDT's XRS Forend Weight adds about a pound inside the forend while keeping the exterior clean. Both made in the USA right here in Michigan.
See our XRS Mini Forend Weights →Pair It With
Our XRS Mini Weights6 oz 2-pack, made for the XRS
PP457FP-T Firing PinThe CZ 457 part we're known for
PP45715 15 MOA RailDovetail to Picatinny, made in USA
Build It Out
Set Up Your XRS
Our XRS forend weights first, then MDT's fit and stage parts.
Made in USAPete's PillarsXRS Mini Forend Weights 6 ozMade specifically for the MDT XRS. 2-pack.Shop Now →
Made in USAPete's PillarsExterior Forend Weights 12.3 ozHeavier 2-pack for MDT chassis.Shop Now →
MDTXRS Forend WeightMDT's own weight for the XRS forend.Shop Now →
MDTLOP Spacer & Weight KitFits XRS, HNT-26, SCS and CCS.Shop Now →
MDTButtstock Spacer KitFine-tune your length of pull.Shop Now →
MDTElite Pistol GripSwap the included grip for the Elite.Shop Now →
MDTBarricade StopRound face stop for barricade stages.Shop Now →
MDTBaker WingsBag-riding wings for positional work.Shop Now →
MDTAdjustable Thumb RestAdjustable rest for grip consistency.Shop Now →
Made in USAPete's PillarsM-LOK Backing T-NutsMachined backing nuts, 2-pack.Shop Now →
MDTM-LOK ARCA Rail 10.25"Adds an ARCA section to the forend.Shop Now →
Made in USA
Complete the Bolt Refresh
The CZ 457 parts we machine ourselves, ready to ship from Michigan.
Made in USAPete's PillarsReshaped Tip Firing PinNitrided tool steel. The part we're known for.Shop Now →
Made in USAPete's PillarsExtractor Holder PP457ESUpgraded replacement extractor holder.Shop Now →
Made in USAPete's PillarsGen 2 Extractor SpringStronger spring steel. Replaces OEM.Shop Now →
Made in USAPete's PillarsExtended Cocking IndicatorStainless, replaces the factory plastic part.Shop Now →
Made in USAPete's PillarsExtended Magazine Release0.40" more reach, bumpy serrations.Shop Now →
Made in USAPete's PillarsSlim Helix Bolt KnobBillet aluminum, knurled helix pattern.Shop Now →
Made in USAPete's PillarsXL Finger Groove Bolt KnobKnurled XL knob for a full hand.Shop Now →
Made in USAPete's Pillars15 MOA Picatinny RailDovetail to Picatinny, 15 MOA.Shop Now →
Made in USAPete's Pillars30 MOA Picatinny RailMore usable elevation for distance.Shop Now →
Made in USAPete's PillarsAluminum Magazine WellReplaces the factory polymer well.Shop Now →
The Next Level
Three Ways to Take the 457 Further.
- Lilja .900 26″ Match Barrel — the upgrade that changes what the rifle will do. 1:16 twist, stainless. Confirm forend clearance for your contour.
- MDT ACC Premier Gen2 CZ 457 — step from crossover stock to a full competition chassis with an interior weight system.
- MDT ACC Elite CZ 457 FDE — MDT's flagship match chassis, in FDE to match this build.
Prefer black? The ACC Elite in Black. Browse all our match barrels and chassis.
Did You Know?
Pete's Pillars Sells More Than Pillars.
From centerfire chassis to optics and reloading, outfit every rifle in the safe in one place.
Optics & Mounts
Bipods & Magazines
Product Specifications
Manufacturer: MDT (Modular Driven Technologies)
MPN: 105051-BLK
Chassis Series: XRS Chassis System
Inlet: CZ 457, Right Hand
Color: Black
Core: Full-Length CNC-Machined 6061 Aircraft-Grade Aluminum
Panels: Textured Polymer
Bedding: Aluminum V-Block System
Weight: Approx. 3.9 lbs (Varies by Inlet)
Length of Pull: 13.25″ to 15″+, Spacer Adjustable
Cheek Piece: Quick-Adjust for Scope Height
Grip: Replaceable Overmolded Textured System; Angled and Vertical Grips Both Included
Forend: 12″, M-LOK Compatible; Accepts ARCA or Picatinny Rails
Magazine Latch: Ambidextrous
Frequently Asked Questions
Fitment, adjustment, mounting and building out your 457.
Will it fit my rifle?
This is the CZ 457 inlet. For a CZ 455, we stock the CZ 455 XRS in FDE. See every XRS inlet we carry.
Does it come with both grips?
Yes. MDT includes both an angled grip and a vertical grip, and the grip system is replaceable. If you'd rather run something else, the MDT Elite pistol grip and our other rifle grips will bolt on.
How do I mount a bipod?
The cleanest answer is the XRS Enclosed Forend, which has integral ARCA along its full length, so an ARCA bipod like the Ckye-Pod Gen 3 Compact clamps anywhere with nothing else to buy. On the standard forend you add a rail section first.
Will it fit a bull barrel?
The XRS forend is built around heavier barrel profiles, but barrel channel clearance is worth confirming against your exact barrel before you order, especially on a rebarreled 457. Reach out if you want us to check a specific contour for you.
XRS or Oryx for a CZ 457?
We only carry parts we trust, can stand behind and know are built with quality, so you're in good hands either way. The Oryx Sportsman is the simpler, more affordable aluminum chassis and it's a big step up from a factory stock. The XRS adds the full-length aluminum core, V-block bedding, more length-of-pull range and a longer forend, so it's the one to buy if you're shooting matches or plan to keep adding to the rifle.
Is the FDE a match for other FDE gear?
MDT's Flat Dark Earth is consistent across their line, so this chassis matches their FDE accessories and the ACC Elite CZ 457 in FDE. Across brands, FDE shades vary a little, so expect close rather than exact. If you'd rather not chase shades, the Black XRS is the simpler choice.
What magazines does it use?
It feeds your CZ 457 magazines, from the CZ factory 10-round up to billet competition magazines like the Position7 13-round. If you're moving to aluminum magazines, add our aluminum magazine well rather than seating them against factory polymer.
Does Pete's Pillars sell more than chassis?
Yes. We machine our own CZ 457 parts, match barrels, M-LOK weights and pillar bedding here in Michigan, and we carry chassis from MDT, XLR and Grey Birch, barrels from Lilja and L3i, optics, bipods, and reloading gear like the Area 419 ZERO press.
Magazine compatibility: the CZ 457 XRS keeps the factory-pattern CZ rimfire magazine system. Standard centerfire AICS magazines do not fit this configuration.
Pete's Pillars is an authorized MDT dealer.
Small Change. Big Impact. Pete's Pillars.
MDT XRS CHASSIS SYSTEM | CZ 457 | BLACK | 105051-BLK
The Most Underrated Chassis MDT Makes.
The MDT XRS is built for shooters who want the fit and feel of a traditional rifle stock with the adjustability of a modern precision chassis. A full-length 6061 aircraft-grade aluminum core runs the length of the stock under textured polymer panels, with an aluminum V-block bedding system, an adjustable cheek piece, spacer-adjustable length of pull and a 12″ forend. This is the CZ 457 right-hand inlet in Black.
The CZ 457 is the rimfire action serious shooters keep coming back to, and plenty of them are still sitting in a factory stock that gives up most of that potential. The XRS fixes the fit: cheek height to get your eye behind the scope, length of pull set to you instead of the average of everybody, V-block bedding under the action, and a forend with somewhere to mount a bipod. It still shoulders like a rifle stock, so it works for a walk in the woods and a match day both. About 3.9 lbs depending on inlet. Use it for: NRL22, PRS rimfire, rimfire steel, .22 trainers, small game, and any 457 build that has outgrown its wood.
Fit You Can Dial In.
Length of pull adjusts with spacers from 13.25″ to 15″+, so the same rifle can fit you in a t-shirt and in a winter coat, or fit a kid now and still fit them in three years. The quick-adjust cheek piece sets scope height without tools, which matters most when you're switching between prone and awkward positional shooting. The grip is a replaceable overmolded system, and MDT includes both an angled and a vertical grip in the box, so you can decide which one suits your shooting without buying anything extra.
A 12″ Forend to Build On.
The 12″ forend gives you room to work: somewhere to add weight, a bipod or a barricade stop, and enough length to put your support where the position needs it instead of where the stock allows. It also has an ambidextrous magazine latch, so left-handed shooters aren't working around the chassis.
Why We Recommend the XRS.
The dedicated competition chassis get the attention, and we sell plenty of them. But the XRS offers something a lot of CZ 457 owners actually want more: versatility. It keeps the familiar feel and traditional look of a conventional rifle stock while giving you a full aluminum chassis underneath. You can hunt with it, compete with it, and keep changing it without committing the rifle to one discipline. For most people who own one CZ 457 rather than three, that's the right trade.
One Rifle, Several Jobs.
- NRL22 and PRS Rimfire: rigid aluminum construction, adjustable ergonomics and modular weight for positional stages.
- Small game hunting: traditional stock geometry and textured gripping surfaces, at a weight you'll carry.
- Precision target shooting: cheek height and length of pull set once, repeatable every time you get behind the rifle.
- All-around rimfire builds: keep it streamlined for the field, or add weights and ARCA as the shooting changes.
Our Take
We Machine Mini Weights Specifically for the XRS
A light rimfire rifle is a twitchy rimfire rifle. Our PPWM mini forend weights are made specifically for the MDT XRS, in a 6 oz 2-pack, so you can settle the rifle down without turning it into something you don't want to carry all afternoon. Want more weight than that out front? Our 12.3 oz exterior forend weights go heavier, and MDT's XRS Forend Weight adds about a pound inside the forend while keeping the exterior clean. Both made in the USA right here in Michigan.
See our XRS Mini Forend Weights →Pair It With
Our XRS Mini Weights6 oz 2-pack, made for the XRS
PP457FP-T Firing PinThe CZ 457 part we're known for
PP45715 15 MOA RailDovetail to Picatinny, made in USA
Build It Out
Set Up Your XRS
Our XRS forend weights first, then MDT's fit and stage parts.
Made in USAPete's PillarsXRS Mini Forend Weights 6 ozMade specifically for the MDT XRS. 2-pack.Shop Now →
Made in USAPete's PillarsExterior Forend Weights 12.3 ozHeavier 2-pack for MDT chassis.Shop Now →
MDTXRS Forend WeightMDT's own weight for the XRS forend.Shop Now →
MDTLOP Spacer & Weight KitFits XRS, HNT-26, SCS and CCS.Shop Now →
MDTButtstock Spacer KitFine-tune your length of pull.Shop Now →
MDTElite Pistol GripSwap the included grip for the Elite.Shop Now →
MDTBarricade StopRound face stop for barricade stages.Shop Now →
MDTBaker WingsBag-riding wings for positional work.Shop Now →
MDTAdjustable Thumb RestAdjustable rest for grip consistency.Shop Now →
Made in USAPete's PillarsM-LOK Backing T-NutsMachined backing nuts, 2-pack.Shop Now →
MDTM-LOK ARCA Rail 10.25"Adds an ARCA section to the forend.Shop Now →
Made in USA
Complete the Bolt Refresh
The CZ 457 parts we machine ourselves, ready to ship from Michigan.
Made in USAPete's PillarsReshaped Tip Firing PinNitrided tool steel. The part we're known for.Shop Now →
Made in USAPete's PillarsExtractor Holder PP457ESUpgraded replacement extractor holder.Shop Now →
Made in USAPete's PillarsGen 2 Extractor SpringStronger spring steel. Replaces OEM.Shop Now →
Made in USAPete's PillarsExtended Cocking IndicatorStainless, replaces the factory plastic part.Shop Now →
Made in USAPete's PillarsExtended Magazine Release0.40" more reach, bumpy serrations.Shop Now →
Made in USAPete's PillarsSlim Helix Bolt KnobBillet aluminum, knurled helix pattern.Shop Now →
Made in USAPete's PillarsXL Finger Groove Bolt KnobKnurled XL knob for a full hand.Shop Now →
Made in USAPete's Pillars15 MOA Picatinny RailDovetail to Picatinny, 15 MOA.Shop Now →
Made in USAPete's Pillars30 MOA Picatinny RailMore usable elevation for distance.Shop Now →
Made in USAPete's PillarsAluminum Magazine WellReplaces the factory polymer well.Shop Now →
The Next Level
Three Ways to Take the 457 Further.
- Lilja .900 26″ Match Barrel — the upgrade that changes what the rifle will do. 1:16 twist, stainless. Confirm forend clearance for your contour.
- MDT ACC Premier Gen2 CZ 457 — step from crossover stock to a full competition chassis with an interior weight system.
- MDT ACC Elite CZ 457 FDE — MDT's flagship match chassis, in FDE to match this build.
Prefer black? The ACC Elite in Black. Browse all our match barrels and chassis.
Did You Know?
Pete's Pillars Sells More Than Pillars.
From centerfire chassis to optics and reloading, outfit every rifle in the safe in one place.
Optics & Mounts
Bipods & Magazines
Product Specifications
Manufacturer: MDT (Modular Driven Technologies)
MPN: 105051-BLK
Chassis Series: XRS Chassis System
Inlet: CZ 457, Right Hand
Color: Black
Core: Full-Length CNC-Machined 6061 Aircraft-Grade Aluminum
Panels: Textured Polymer
Bedding: Aluminum V-Block System
Weight: Approx. 3.9 lbs (Varies by Inlet)
Length of Pull: 13.25″ to 15″+, Spacer Adjustable
Cheek Piece: Quick-Adjust for Scope Height
Grip: Replaceable Overmolded Textured System; Angled and Vertical Grips Both Included
Forend: 12″, M-LOK Compatible; Accepts ARCA or Picatinny Rails
Magazine Latch: Ambidextrous
Frequently Asked Questions
Fitment, adjustment, mounting and building out your 457.
Will it fit my rifle?
This is the CZ 457 inlet. For a CZ 455, we stock the CZ 455 XRS in FDE. See every XRS inlet we carry.
Does it come with both grips?
Yes. MDT includes both an angled grip and a vertical grip, and the grip system is replaceable. If you'd rather run something else, the MDT Elite pistol grip and our other rifle grips will bolt on.
How do I mount a bipod?
The cleanest answer is the XRS Enclosed Forend, which has integral ARCA along its full length, so an ARCA bipod like the Ckye-Pod Gen 3 Compact clamps anywhere with nothing else to buy. On the standard forend you add a rail section first.
Will it fit a bull barrel?
The XRS forend is built around heavier barrel profiles, but barrel channel clearance is worth confirming against your exact barrel before you order, especially on a rebarreled 457. Reach out if you want us to check a specific contour for you.
XRS or Oryx for a CZ 457?
We only carry parts we trust, can stand behind and know are built with quality, so you're in good hands either way. The Oryx Sportsman is the simpler, more affordable aluminum chassis and it's a big step up from a factory stock. The XRS adds the full-length aluminum core, V-block bedding, more length-of-pull range and a longer forend, so it's the one to buy if you're shooting matches or plan to keep adding to the rifle.
Is the FDE a match for other FDE gear?
MDT's Flat Dark Earth is consistent across their line, so this chassis matches their FDE accessories and the ACC Elite CZ 457 in FDE. Across brands, FDE shades vary a little, so expect close rather than exact. If you'd rather not chase shades, the Black XRS is the simpler choice.
What magazines does it use?
It feeds your CZ 457 magazines, from the CZ factory 10-round up to billet competition magazines like the Position7 13-round. If you're moving to aluminum magazines, add our aluminum magazine well rather than seating them against factory polymer.
Does Pete's Pillars sell more than chassis?
Yes. We machine our own CZ 457 parts, match barrels, M-LOK weights and pillar bedding here in Michigan, and we carry chassis from MDT, XLR and Grey Birch, barrels from Lilja and L3i, optics, bipods, and reloading gear like the Area 419 ZERO press.
Magazine compatibility: the CZ 457 XRS keeps the factory-pattern CZ rimfire magazine system. Standard centerfire AICS magazines do not fit this configuration.
Pete's Pillars is an authorized MDT dealer.
Small Change. Big Impact. Pete's Pillars.
| Brand | MDT |
| Gun Platform | CZ 457 |
| Chassis Series | XRS |
| Type | Chassis |