PETE'S PILLARS | PRECISION CZ RIMFIRE COMPONENTS
More Reach. Smooth Feel. Easier Magazine Changes.
A magazine release should be easy to find without taking your attention off the rifle. Our USA-made PP457MRS Extended Smooth Magazine Release puts a longer, comfortable contact surface on your CZ 452, 453, 455, or 457. Whether you're hunting squirrels, shooting from a bench, or working through a competition stage, it's a simple upgrade you'll notice every time you change magazines.
The 1.59-inch extended catch gives you approximately 0.40 inches of extra reach compared with the roughly 1.19-inch factory release. That's a meaningful difference when you're wearing gloves, working around a stock or chassis, or simply want to find the control by feel.
What sets PP457MRS apart is its smooth, flat contact face. It gives your finger a broad, clean surface without aggressive serrations. You get the added accessibility of an extended release with an understated, factory-friendly feel.
Solid Steel. CNC Machined. Black Nitrided.
We machine PP457MRS in the USA from solid steel and finish it in black nitride for a dark, uniform appearance with wear and corrosion resistance. The finish complements the CZ's existing hardware, while the carefully machined flat face keeps operation comfortable.
Backed by over six years of CZ rimfire experience, this is exactly the kind of detail we focus on at Pete's Pillars: a small part that makes your rifle better to live with in the field and on the firing line.
Pair It with a Radiused Magwell
Easier magazine changes start with a release you can reach. Pair PP457MRS with our PP457SR Radiused Magazine Well Spacer, and you improve both sides of the magazine change: a longer catch to release the magazine and a radiused opening to help guide the next one in. It's a natural combination for squirrel hunting, competition, bench shooting, and cold-weather use.
If you prefer the original squared magazine opening, our PP457SB OEM-Style Aluminum Spacer offers an OEM-style aluminum alternative. Shooters running aluminum magwells such as the DIP Inc. 19048 or L3i will also appreciate an extended catch. Want more traction under your finger? Choose our PP457MRB Bumpy Serrated Magazine Release instead. It offers the same extended reach with a raised, textured face.
Right at Home on a Hunting Stock or Chassis
The extra reach is especially handy on a CZ 457 wearing an MDT Oryx, MDT Field Stock, or KRG Bravo. For shooters building out a dedicated competition rifle, explore the MDT LSS Gen3 Competitor, MDT ACC Premier Gen2, or flagship MDT ACC Elite. The longer magazine catch fits naturally into that progression without changing the familiar way you operate your rifle.
Browse our CZ 457 Parts & Upgrades Collection for more USA-made magazine controls, precision rimfire parts, and complete build upgrades.
Product Specifications
Manufacturer: Pete's Pillars
Part Number: PP457MRS
Product: Extended Smooth Flat Magazine Release Catch
Rifle Compatibility: CZ 452, CZ 453, CZ 455, CZ 457
Overall Length: 1.59 inches
Factory Release Length: Approximately 1.19 inches
Added Reach: Approximately 0.40 inches
Material: CNC-Machined Solid Steel
Finish: Black Nitride
Contact Surface: Smooth Flat Face
Includes: One Magazine Release Catch
Manufactured: USA
Frequently Asked Questions
The fit, the feel, and what makes magazine changes easier.
Will PP457MRS fit my CZ 452, 453, 455, or 457?
Yes. It fits the factory magazine release assemblies on all four models. You get the familiar operation of your CZ magazine catch with more reach and a smooth, flat face.
What's the difference between the smooth and bumpy releases?
Both are 1.59-inch, USA-made steel releases. PP457MRS has a smooth, flat face and black nitride finish. PP457MRB has raised serrations for extra finger traction, with a blued finish. Pick the feel you like best.
Is the extra length worth it for hunting or shooting with gloves?
Absolutely. The extra reach makes the catch easier to find when you're changing magazines during a squirrel hunt, at the bench, or on a match stage. The smooth face feels comfortable under your finger; if you prefer more bite with gloves, choose our bumpy PP457MRB.
Why pair this with the PP457SR radiused magazine spacer?
The extended catch helps you release the magazine, and the radiused PP457SR helps guide the next one back in. It's a useful combination for quicker, more comfortable magazine changes in the woods or at the range.
What about DIP 19048 or L3i aluminum magwells?
An extended magazine catch is a natural complement to aluminum magwell setups such as the DIP Inc. 19048 and L3i designs. It puts the control further into reach while retaining the familiar release motion.
Is PP457MRS useful on an Oryx, Field Stock, or competition chassis?
Yes. If your CZ 457 wears an Oryx, Field Stock, KRG Bravo, or competition chassis, the longer catch is a welcome convenience. You can find and press the release without searching for the short factory control.
Does the release come with a spring and retaining pin?
PP457MRS includes the extended steel magazine release catch only. Reuse the spring and retaining hardware from your existing assembly.
Over six years of CZ rimfire experience. Precision parts made in the USA.
Pete's Pillars. Small Change. Big Impact.
