Springfield Armory. Here's why:
A couple of years ago, I bought an low number M1A Super Match from a co-worker for what I though was a steal. I was going over everything and checking all parts to see which were USGI. When I got to the bolt, I could not make sense of the markings so I called SA to ask them about them. They told me that the bolt may be under warranty (they had problems with some of their cast bolts and had a recall that started back in the 1990's).
A digital pic was sent to them and they confirmed that it indeed was covered under warranty. So, off to SA goes my my Super Match. About 4 weeks passes and I get a call from Mr. Dale Rader who runs their custom shop. Mr. Rader begins to apologize and explains that they had misplaced my rifle and that they were just starting to work on it.
When I sent it in, I had included a note requesting that they replace my bolt with a USGI one, so I asked him if that would be possible. He said "no problem, we're installing a Winchester for you".
He then says that the rifle is going to require a "little more work". So now I'm wondering what it needs and what it's going to cost me (M1 A parts aren't cheap).
He explains that they could not get the rifle to headspace properly and that it will need a NEW MATCH BARREL(OUCH! I'm thinking..... this is going to cost me big time). Then he tells me that they need to modify the receiver a bit when they install the bolt and that it will have to be COMPLETELY REFINISHED (now I'm really thinking I'm going to get slammed financially and that maybe I didn't get such a great deal on the rifle afterall.)
So, at this point I ask him how much all of this is going to cost. His reply: "Nothing, it's covered under Sprinfield's Lifetime Warranty". "We'll ship it back to you on our dime in a couple of days".
Me: "let me go over this again real quick.... you're going to install a USGI Winchester bolt, a brand new Heavy Match barrel and completely refinish my rifle and it's going to cost me nothing, not even freight to ship the gun back?"
Mr. Rader: "Yup"
I got it back about five days later and it looked brand new. I almost feel guilty about it to this day.
Folks, when Springfield says that their warranty is "lifetime" they really mean it. That rifle had at least two previous owners before I got it. By my count, the parts and labor that went into my rifle would have cost somewhere in the neighborhood of $900.00 if they were not covered under warranty.
Needless to say, I am a fan of Springfield Armory!