A big thank you to Surefire and a thanks, but no thanks to AGP.
One of my Surefire Gun Magazines 20 round Saiga 308 mags recently fell about 8' on to concrete while fully loaded. The result was a cracked feed lip. I emailed SGM explaining the situation and asking if I could purchase the mag body alone. They responded back asking for my address so that they could send me a mag body at no charge.
Now for AGP...
Apparently they had a bad batch of mag springs in their 10 rounds Saiga 12 mags. I was unaware of this until I found a few of my mags had rusty broken springs. I did a search online and found results about a bad batch of springs in early '09. Those posting that info mentioned that AGP was replacing the springs at no charge. So I contacted AGP. After a bit of BS they offered to sell me new springs at a discount. They "stopped sending free replacements a couple of years ago".
So thanks again to Surefire.
Also, if you own or come across any AGP mags made in early '09... check the spring.
I have had the exact same experiences with both companies.
SMG went the extra mile to resolve the issue. Top notch customer service!
When i discovered rusty springs in six of ten magazines I called and talked to Kevin, the owner of AGP. He tried to blow smoke up my ass and tell me how their springs, rust and all, were superior. I have head of people getting their rusty (improperly heat treated) springs replaced for free before and after I called in. As far as I am concerned AGP can suck it. I don't care what it is, I will NEVER buy another AGP product. When you are a lier and a cheat I won't walk across the street to piss on you if your on fire.
I won't be buying any of their mags again. I understand that a company can/will put out a defective product from time to time. It's how they handle it that matters. They didn't have to offer me discount
springs, but they did. It was their BS that turned me away.
At first they assured me the mags
"didn't leave the factory like that" and claimed the distributor must
have stored them improperly. They then suggested I try getting
replacements from whoever I purchased the mags from. I had to mention
the bad batch of springs before they even acknowledged it. At which
point they countered by claiming my mags probably weren't part of that since
they lasted this long. Yeah, because it's not uncommon for a mag spring
to crap-out after only twenty-10 round cycles.

Not to mention the mags had manufacture dates consistent with the
defective springs. The rep I was talking with said the best they could
do is sell me springs at 50% off. I declined and ended the conversation.
I'll give SGM's Saiga 12 mags a try. I haven't researched them, but their Saiga 308 mags have been 100% reliable
for me. If they give me issues I'll have to find some Russian mags.
I got a couple different stories when I called. One was that there was no problem with the springs (although numerous people had their springs break). Then I was told they knew the springs were heated wrong (hence the rust). So, they knew there were issues but sent them out anyway. I was told that they would only replace the springs once they broke. This was different then what others were being told.
I know AGP helped start the Saiga boom by being one of the first to offer high capacity mags. However, due to their ethics, my money goes elsewhere.