Left hand Single Magazine Pouch Fits:
 
GLOCK 17/19/22/23//25/26/27/31/32/33/34/35/37/38/39 (Gen. 4 & Gen. 5)
Beretta PX4 STORM |H&K P30 |Walther PPX 9mm/.40|CZ P-07|CZ P-09|CZ 75 Tactical Sport