Will consider 4" or 6". Must be in reasonably good "shooting" condition, and REASONABLY PRICED. I want to SHOOT this gun; please don't waste my time (and yours) with collectable guns and collectable prices. Guns with minor finish wear (even minor external pitting) are PREFERRED to "perfect" guns (unless you wanna sell me a museum-quality piece, CHEAP!). Have several guns I'd be willing to trade for the right Colt (through FFL ONLY); list your wants when you PM me. Please include all info in first contact; barrel length, condition, any modifications, price, your (approximate) location, and your wants/needs for trade, if any. Thanks for your time!