I use a Glock 21 built by Glockworx in Open class and Limited Class and they work just great my only disadvantage was in open class when most shooters here in California shoot 9 Major and the magazine capacities are from 28 to 30 rounds, I also shoot a Caspian Race gun in 9 Major, but I love shooting my Glockworx G21
here is a short video of me using my Glockworx G21 45 ACP
Glockworx G21, G22, G17, G35 Open & Limited Class
Caspian 9 Major Open Class
GSG-SD5 , 30 Cal Carbine, Custom AR16
Member USPSA/IPSC and IDPA
Last edited by glockworxphilippines; 10-31-2011 at 23:51..