Upgrade or customize your CZ 457 rimfire rifle with the CZ Miniset MTR 22 LR 525mm Barrel—a complete conversion kit designed for shooters who want precise control over caliber and barrel profile. This miniset includes a heavy 20" varmint-profile barrel, pre-threaded for suppressor use, and all the components you need for a seamless switch to .22 LR.

Whether you're building a match-grade rimfire or dialing in a varmint rig, this kit offers plug-and-play compatibility with all CZ 457 models and maintains the precision and modularity CZ rifles are known for.

What’s Included:

• 20" Varmint-Profile Barrel (525mm) chambered in .22 LR

• 1:16" twist rate for optimized .22 LR performance

• ½x20 UNF threaded muzzle with thread protector plug

• 5-round fiber-reinforced polymer magazine

• Magazine well insert to match .22 LR feeding geometry

• Required barrel change wrenches

Technical Specs:

Why We Like It:

• Converts any CZ 457 to a heavy-barrel .22 LR setup

• Match-grade barrel delivers repeatable accuracy

• Ideal for target shooting, training, or small game

• Tool-included kit = user-friendly barrel swap

• Suppressor-ready with standard threading