Umarex Glock 17 Gen 4 Pistol Co2 Spare Magazine .177 4.5mm 18 Round 4.5mm BBs 5.8364.1

I have purchased this item for a 2nd time.... it is perfect for the price and a perfect copy of the Glock 17 gen 4 Magazine..... DO NOT PURCHASE THE CHEAPER ITEM ON HERE as its not compatible or substandard parts....This Magazine is perfect i have put many many rounds through it but remember real gun or not a well maintained weapon is a working weapon so oil the ammo slide channel before use also the gas screw treads...... And lets not forget the 'O' Ring.......

They work well, but have no right being this expensive for what they are.

Just perfect