Our custom extractors are crafted from S7 tool steel, offering tighter tolerances and enhanced durability compared to factory models. The thicker material ensures a more secure fit, leading to improved extraction reliability, especially for match-grade ammo like Lapua and Eley in match chambers. With a 30% increase in spring tension, our extractors provide a stronger grip on the cartridge rim, delivering consistent and smooth extraction even under heavy use. While the initial break-in period (10-20 rounds) may result in a slightly tighter bolt lock down, this upgrade ensures long-term wear resistance, corrosion protection, and a reliable extraction system for your CZ457. 
 
*These extractors are designed to use the factory C-Clip. We do not recommend using our upgraded C-Clip with these extractors as excessive bolt lock down pressure will occur**