Some states do allow it.
Yes, so long as you comply with the Federal national Firearms Act, which regulates the transfer of the suppressor to you.
Yes. It unscrews just like the fake suppressor on the MP5 22lr rifle.
Slows down gases.
You get and NFA Class III permit and buy a suppressor.
Not unless the baffles are sized incorrectly, and cause the projectile to come into contact with them. A properly made suppressor won't have this problem. It is, however, possible for a suppressor to affect barrel harmonics, which can reduce the accuracy of the rifle itself.
yes
Rifle
No.... You can only hunt with 1 rifle at a time
yes
squirrel
No
It was the Commando assault rifle with Red Dot Sight and Suppressor.