Hello All; i just bought a m&P 15-22 from gander the other day. Its been way to cold here to shoot it yet but of course i did the cleaning and i put a red dot scope on it. My question is about the warranty. Gander gave me a lifetime warranty, is this unusual or is it a Gander standard?The serial # is DTHXXXX.I cant wait to try this puppy out. thanks in advance, pghrich