Yeah I heard Mossberg's customer service stinks but I have heard that almost all gun companies customer service is terrible. The only company I heard of that gives a darn is Ruger.
Had a Kimber FTF 2x in 10,000 rds. (no exaggeration). Kimber sent me a brand new mag, slide stop and springs. Said, find what the problem is, fix it and keep the other items as our gift. - BEST customer service EVER.
Mossberg 930 had about 6 jams in 250 rds, sent it back...nothing, shows up at my door one day. no explanation as to the issue. Still jams about 3 times in 100 rds, sent it back...comes back, about 3 jams per 150 rds....I called and they barely speak English AND act as if you are bothering them...LITERALLY had a guy who yelled in spanish in the background over my call as I spoke. They are in a bordertown (Eagle pass) After that BS, I sold ALL of my Mossberg's except this garbage 930 no one wants. - CS ABSOLUTELY TERRIBLE. Last Mossberg I will EVER own.
Sig - had a P238 that the grip screw was stripped from factory. They took it back, could NOT get them to tell me when I would get a replacement. I had the gun for about 10 days and it was send back less than 2 weeks after buying it new...8 weeks before I got a replacement. They LITERALLY told me they decide which model to make day by day and cant provide an estimate when they would create a new one of my particular model. Once day it was made and they sent a free mag and cheap holster as a "Sorry". CS- mediocre.
I emailed Glock because I had 3-4 FTF's in about 500 rds. They told me to send them the bad mags and they would replace. I had the replacements no question asked in about 5 days. _ Pleased with their CS
Diamondback Firearms - Had a DB9 that would NOT fire with steel cased ammo, reliable with HP and would NOT feed with 1 handed firing.. Called their facility. (I live 6 miles from the plant) I got some call center with a guy that had NO idea about guns. I told him I was experiencing FTE's and FTF's and he literally said "so the upper half isn't working with the lower half" and gave me the address to ship it to. I told him I wa sliterally within 3/4 of a mile of the facility and could drop it off. He said "no, you have to ship it"Hr was OBVIOUSLY from a 3rd party call center. I later asked to buy replacement recoil springs, etc and was told you have to send the gun in and pay a $50 gunsmith fee to determine the problem and then the amount to fix the problem. I eventually got a hold of an awesome guy at the facility who took the gun in person and turned it around in one day...unfortunately it still DID NOT fire 1 handed. as a CCW thats a no-go for me and I dumped it.
Kel Tec - Also right down the road. I walk in all the time to upgrade parts, buy accessories, shoot the S. I once wanted to have my Sub2k threaded . I was told it would be $40 to tear it down. I brought it by and the LEAD engineer came out and told me all about what needed to occur and blah blah blah. He handed me my gun in pieces and 2 weeks later I brought it back, was advised it would be $40 to reassemble it...about 40 minutes later the lead engineer came back out, never charged me a dime and explained that since I may be shooting it suppressed he recommended certain upgraded to the parts AND that he already installed those upgraded as no charge... Customer service BEYOND EXCELLENT
Kahr CM9 - Brand new mag was sticking in gun. Emailed KArh and about 2 days later had an addres to send it to. I was annoyed that I had to pay for a faully mag but sent it and got a replacement in about a week.CS - Pretty good
Springfield Armory - Hesitantly bought a new SA xd 45 and the mag release was very stiff. Emailed them..had a response within 48 hrs explaining a possible fix and aveneue of follow up. I filled out the form for the 3 free mags and was told it would take 8-12 weeks. I received in in 8 days TOTAL. - CS EXCELLENT
I have dealt with RRA, CMMG and received a quick and excellent response. Olympic Arms was quick but often times a "blow off" of a response. Palmetto State Armory almost never responds UNLESS you email a specific person, I believe he is their promotions guys. But when you email him, it gets fixed quickly...the general email often gets ignored.... Overall satisfaction VERY GOOD
Accessories -
Emailed Magpul about bad magpul rail cover and they sent me an entire package to make up for it.
Eotech - emailed them about a failed EoTech, received multiple excuses how it was't their problem