Don't be so quick to judge companies. I had something similar with a FN FiveSeven pistol. Over 3,000 round on a second hand pistol testing all manner of unusual loads for suppressed 5.7x28mm to make quiet ammo. Then out of nowhere one round sounded different and pieces of plastic rained down on the ground. Shaking the pistol, it sounded like a pepper shaker. Took time but I got all the pieces. I was not expecting FN to do anything for me. I called, they were very concerned if I was alright. I sent in the pistol in a little zip pistol body bag and note stating I was firing handloads, fully expecting to have some gunsmith bitch me out about what I had done to one of their pistols. (All ready got that t-shirt from Dan Wesson, thank you. Their guru STFU when I explained being active duty Coast Guard and the pistol took a swim in the Atlantic Ocean) I never got that call from FN. One call back asking for an address where UPS can find me.... I was expecting the body bag back. Three week later UPS shows up at my work and delivers a brand new FiveSeveN pistol kit, complete with the three mags, manual, tools, etc and even the cute & useless once fire brass. ((Interesting foot note. Warranty repair and replaced firearms need not go though a FFL dealer. I live Alaska, FYI))
I have had good luck with all firearms manufacturer's. I was an Alaskan EMT, NRA Instructor and Alaska Hunter Safety Instructor. I have put allot of guns to endurance tests in real life. FN, Ruger, Marlin, Weatherby, Dan Wesson, have fixed my mis-adventured firearms for nothing.
As for Walther, when I met my wife she had an Interarms PPK/s in a Galco shoulder rig with two full mags on the opposite side for balance. I have a small herd of them now. My favorite (smiling thinking of it) is a stupid P-22 I tried to fire to failure. See how many suppressed rounds it could take before stopping of a true malfunction and not dud 22 ammo. I thought it would take weeks, it took months and months. 1,879 rounds of crappy Remington Subsonics (a dud in every box. Two if you are lucky!) before it jammed. I was thinking 300 something. Nope. I have now added the P22 and cute little suppressor into my hunting gear.
Kevin M