If you carry a 1911, railed or not, take a look at the iTac Defense Retention Roto Paddle Holster. This Holster is made from a high tech polymer that is extremely durable and features iTac's patented retention system. This retention system has a zero time to disengage feature because you release your pistol as part of your natural draw stroke by depressing the lever on the side with your trigger finger. The "Roto" portion of the holster refers to the fact that it can rotate 360 degrees for a variety of carry options including different cants, cross draw, small of back carry, etc.

Specifications and Features:
Comfortable, contoured fit holster is positioned to where your trigger finger normally rests at "The Ready"
Fully adjustable for cant
Rotates 360 degrees for every application (small of back, cross draw, etc.)
Adjusts with simple Allen key
Protective sight channel

Fits:
Most 1911 pistols with or without rails