KCI Glock 17 17 Rnds Magazine 

(Not endorsed by GLOCK)

Durable: Made from impact resistant polymer with an internal steel liner.

Ambidextrous: Can be used with left or right side mag release.

Witness holes: 4 through 17

Flat base 

Easy to carry a spare on the belt or holstered provided your belt, mag pouch and holster are a decent quality.

Size: 116hx23wx33mm (Approx) 

KCI magazines are Made in Korea and have often been re-branded under other product names.

They have developed a reputation for being durable and hard wearing for a good Price. Great for hard use during training.