I've never had to send mine back. I did have to run about 200 CCI Minimags through it at first. After that, it will eat any kind of ammo I throw at it. About 6 months and over 6,000 rounds and mine shoots just as good or better than new.
It's hard to say what might fit your needs unless you narrow it down a little more. I'd start by looking at this thread and see what you like, then inquire about those parts: http://smith-wessonforum.com/smith-wesson-m-p-15-22/102415-m-p-15-22-picture-thread.html
I'm going to have to try that golf ball holder and also the tennis ball idea. We usually shoot golf balls at 75 meters on the ground. It would be much more fun with shooting them like you are doing.
I do a lot of shooting at an outdoor range with a friend of mine. He has a Ruger 10-22 and I have the M&P 15-22. We both have red dots. I have the Primary Arms which I highly recommend. He also has a Ruger 10-22 with a scope, but he always ends up using the one with the red dot. We have a ton of...
I searched and read reviews for hours the other day. I couldn't find any bad reviews on the Nikon Prostaff scopes.
Here is a 3-9: Prostaff Rimfire Rifle Scope 3-9x 40mm BDC 150 Reticle Matte
I ordered this 4-12 since it is $70 off for the next few days: Prostaff Rifle Scope 4-12x 40mm Mil-Dot...
I'm not sure how many of you go to the following site, but it is handy for looking up cheap ammo:
gun-deals.com - User-Submitted Gun & Ammunition Deals
After a couple hours of reading reviews today I ordered a Nikon. There are a lot of other scoped out there with very good reviews, but Nikon edged out the others by a tiny bit from what I could find.
That would be kinda scary to get hit by a ricochet at an indoor range. Reminds me of this outdoor video:
Guy hit in head with .50 caliber ricochet - YouTube