I wanted to share my experience of getting the 15-22 running with a Slide Fire. Even after seeing videos of it working, I found a lot of conflicting info on the net, so hopefully my experience will help others.
I did not even bother to try it stock. I bought a CMC 3.5 Flat Trigger and installed that with the KNC anti-slip pins. This was a fairly straight forward install. The trigger drops in and for how to install the pins, there is a great how-to video on the manufacture site.
Next, I installed the stock, which is a little different than a standard AR15, but very similar and sprayed some Rem-oil on the buffer tube. I am not really sure the lube is necessary, but I figure its a good precaution.
I was immediately able to get bursts with standard Winchester lead tip ammo, but it ran a little better with high-velocity American Eagle. Still, it was frustrating I could not do a mag dump.
Next, I attached a forward grip. This really, really helped. I could do mag dumps no problem. Sense the install I have probably put 40 magazines through the gun - not a problem at all. Just dumped them all, with the occasional hick-up that was most likly ammo related. I have used all different types of ammo and it all works just fine.
Now, I did let a friend try. She is new to gun and not familiar with rifles. I should stress that I am familiar with Slide Fires and have shot probably a couple thousand rounds through AR15s and AK47s. My friend simply could not shoot more than a couple bursts.
I'm going to try the Slide Fire muzzle brake in the next week or two. This should hopefully make it easier for friends. But I can say with the couple mods and a little practice anyone can do full mag dumps - no problem.
Lastly, I just want to stress how damn fun this thing is. I loved my 15-22, but now it the gun will have to be pulled out of my cold, dead hands, before I give it up. Being able to do mag dumps is a great head turner and a ton of fun. The AK47 and even the AR15s take a bit of effort to keep on target. With this you can shoot hit your shot every time and it does not beat you up. Without a doubt my favorite gun. Ill probably have to buy a second one now, so this one can be dedicated for bump firing
I know it is a bit hard to believe and there is a lot of mixed information out there about getting the Slide Fire to work, but I can say this setup works well