G&P and A&K both make airsoft guns based on the Magpul Masada (the basis of the Reminton/Bushmaster ACR). A quick search for "G&P Masada" or "A&K Masada" should yield you plenty of results.
ACR means Adaptive Combat Rifle.
The SCAR is stronger than the ACR.
Air soft is the common term, soft air is the correct name.
Anything is possible but not likely with air soft. But they do hurt when they hit you. Simply don't shoot anyone with an air soft gun. Treat it like a real gun.
For an air soft gun it's average. Air soft guns can reach 400 FPS.
An air soft gun can possibly kill a rattle snake but it depends on the gun and where you hit it
Achieve the ACR Mastery Challenge.
you can't!
A BB gun has a very hard projectile and will cause more damage to a person than an air soft pellet.
No.
No
No