I love this little conversion kit. It turns my 29SF into the lightest rimfire pistol I have ever felt - and I have been able to get some pretty good precision out of this little bugger too. I changed the sights out to some Dawson precision fiber optic front w/fully adjustable rear and I am quite happy with the results. I can see this kit coming in handy while backpacking, etc. No need to take or get used to shooting more than one pistol - it's like having two pistols in one. I am in the mode of testing what is the best ammo for this unit right now. I never liked buying bulk ammo at walmart - but the kit does seem to have designed to shoot Remington rimfire ammo. It really does well with: Remington Golden bullet (so far 1 dud in about 200 rounds) Remington target Federal #719 target CCI velocitor. Other ammo I have tried in it jams or won't move the slide back (sometimes the slide won't move back even with the above ammo). The little 3.78" barrel won't allow for maximum velocity in these rounds. I expect the high velocity rounds are only going sub 900 fps out the gate, but it's still cheap to shoot and a lot of fun to boot. I guess I've had maybe 500 rounds through this unit so far - and it needs to really be lubed up well to function properly. Anyone else have one of these compact 10mm to .22lr conversion kits?