PLEASE ALWAYS CONFIRM STOCK BEFORE PLACING YOUR FINAL ORDER.
 
Description
 
CZ 455/457 10rnd +3 Extension
 
Add three rounds of capacity to your CZ 455/457 10 round magazine with the MKM CZ 455/457 10rnd+3 Extension.  Redesigned shape for increased strength and durability. Printed from  durable nylon 11 material on our state of the art HP Multi Jet Fusion machine. Easily installs in under a minute, simply remove baseplate and slide on extension. Extremely lightweight, lifetime warranty, and made in the USA! Reuses stock spring and follower. ONLY WORKS ON 10 ROUND MAGAZINES