This Optic Ready 1911 BH1S Commander Belt Holster is the ideal holster for a Commander size 1911 with or without an optic installed. Best fitted for 1911s with no or half rails, it is an attractive 1911 belt holster that fits like a glove and offers excellent retention for barrel lengths from 3.5 to 4.25 inches. One size 4.25 firearms will fit flush. Compatible with 1911 4", Colt 1911 4", Commander 4.25"; Keltec PMR30; Kimber 1911 4", Pro TLE/RL II; Ruger SR1911 4.25" and similar frames.