Posted 24 September 2012 - 03:08 PM
Hi bg1111. All KWA Mk series 1911 pistols are popular. But, I'm sure the reason why the MK II and IV are sold out everywhere is because people want rails on their pistols to attach lights and lasers and the like. I don't think one MK pistol would be more accurate over the other on design, besides maybe the full length guide rod may help with stability... I've shot the MK II, III, and IV and they are all pretty much the same in terms of blowback action, smoothness in recoil, stuff like that. It truly is preference.
While I love all the MK series pistols, I chose to roll with the MK II because there was a lanyard loop, rail, forward and rear serrations, a nicer safety than MK III/IV, and no extended mag well... again these are options open to the end user, ensuring they get the pistol they want most. So back to your question, I'm pretty sure they all perform close to identical in terms of accuracy/range/performance/etc, but it's all about the external features that make them unique.
And Chuck, give KWA a call for those parts, 1-626-581-1777, open 8:30 am to 5:30 pm PST, Mon-Fri. But, one of the forum members (Brick Stone) bought these parts (barrel bushing, recoil spring guide, all the rest) to turn his Mk IV more into a MK 2, or GI style gun. But, when he got the parts, they didn't fit. Apparently the parts were made to different spec than found on the stock Mk 2.... I can't remember exactly what he said, but if you need more info, you can certainly PM him.