On Monday 9/28, I spoke with Lenny in Tec Support, who had called me to let me know they received my 995, and also to answer some questions that I had written in a letter I included with the gun. The main part replaced was the original Breech Bolt, updated to a TS Breech Bolt, but without the LRHO plate attached. On the original, the bolt retainer channel was starting to collapse near the metal inserts. Other parts replaced was the front site, some rear site parts, the two front rails I normally take off and throw away, an updated TS trigger, the safety and pin, and all internal springs. Another part replaced, that was surprising to me, was the stock. I don't know why they replace that, the other one was fine, but that was really nice of them. I had returned it in a TS stock from another carbine, hoping that if they did replace the receiver because of the double stamped serial numbers and replaced safety, they would use a LRHO receiver. But it still has the original receiver and numbers. What's funny is that I normally run this receiver in a modified ATI stock, so it won't even stay in it . They also included some replacement mag springs and followers, and a replacement firing pin and spring set up that I asked for. They also had the usual list of things that they've replaced or adjusted, and of course they test fired before shipping. Oh, and the free mag! The emailed me Tuesday 10/6 that it was shipped FedEx and it would arrive Thursday. All in all I would call that some pretty awesome service!