1. Can you bump it? Maybe with a lighter trigger?

2. I know if you buy the upper alone, it says it will go on a standard lower assembly...will the funky buffer deally work with a carbon 15 rifle lower....you know, thay already have the "guide rod" and small recoil spring setup?

3. Can I assume shortening the barrel (for use on my pistol or SBR) wouldn't effect reliability..since it's blow back...barrel length shouldn't matter...right??

Thanks in advance......yes, I have found some threads on this, but I haven't found answers to these questions.

BTT

Somebody must have one of these....please help.

BTT