Depends on the ammo, the range, and the construction of the walls and the armoured cars. Most basic family homes - siding, insulation, drywall - won't even stop a regular handgun round.
Yes
Depends on markings on upper.
Try AR15.com Try AR15.com
If it is one of the recent Colt .22LR AR15 rifles, then the answer is no - they are completely different internally.
1959
Yes
The US Army presently uses the M4 carbine, a shorter and much modified version of the Armalite AR15.
Colt has not offered a AR15 in 308
That's a smoking deal on the Mosin-Nagant. That's the one I'd go with.
By it's serial number. Go to www.proofhouse.com and under 'long rifles' listing look for AR15 Sporter
@ 40 inches.
Depends on model.