I bought a new MK1, 6 7/8 in heavy tapered barrel in 1976, shooting with a local pistol club. I shot with the club for a full year until enviromentlists closed our range. I outfitted it with a set of Ruger thumrest walnut grips and it is scarry accurate.I carried it bow hunting and small game hunting for the last 40 some years. I can't remember a single failure to or failure to eject no matter what ammo I used. I remember paying 79.00 bucks for it. The bolt held open on the last shot and improved mag release on the MK11 would be nice, but I'd never part with my MK1. hdbiker