CPD AR-15 .204 Ruger 5-Round Stainless Steel Magazine

This is a STAINLESS STEEL 5-round magazine that holds .204 Ruger caliber ammunition, developed by C Product Defense.
CPD used a process called Isonite, “ISONITE” is a high-performance variety of salt bath nitrocarburizing process. It is a thermochemical diffusion process whereby nitrogen-bearing salts generate a controlled release of nitrogen at the interface of a ferrous part. The benefits of this process include improved durability, corrosion resistance better than chrome plaating, lower material distortion, greater resistance to abrasion and seizure, heat resistance, and last but not least a beautiful black appearance.
The enternals of this magazine include a blue follower, and a stainless steel compression spring.
Keeping a few extra factory magazines around is never a bad idea; extra magazines save loading time at the range and also serve as a backup for those days when you simply cannot remember where you put your primary magazine.