So finally got my T36 fully assembled and test fired last week. No bueno. Was one of the first run receivers and I work outside the country on a constant so I have little window when home to take care of my hobbies and such so not too sure on the route I will take here.
Where to begin? Fitment of my HK production BCG was loose in lateral movement even with the extended cam pin when dropped in without a recoil guide rod. With a guide rod, shifting minimized. However, As I am a lefty this stuck out to me, Charging the BCG with my right hand and not letting it slam home I noticed it felt strange like as if the bolt hit the trunnion. No visible marring was present. This also was not experienced when charging with the left hand. Nor when charging with either hand and letting it fly home. (ballsy move cotton I know) I am attributing this to the gaping oversizing of the receivers that occurred that thus ended up requiring an extended cam pin. (This honestly surprises me that it wasn't a recall with such a mistake in a crucial (expensive) component of the gun.)
Secondly, The chamber was a tight senorita to work with. Crazy tight actually. I hand cycled live rounds at the range before firing and extracting cases was hard. Not impossible or requiring a tool but enough to cause marring to the brass in a similar fashion to the burn marks flutes cause to brass out of G3's/MP5's. I am hoping this may wear in with use but I am going to be paying close eye to that. I am thinking this may attribute to the next issue as well.
Thirdly, I did not get any two rounds to fire without malfunction in the gun. Specifically short-stroking. I shot one full mag working it as a straight pull bolt gun. The full barrel group and piston assembly was the pinned and welded GSG9.us rifle length G36K set offered on Tom's site. (all other parts are HK, magpul, and B&T FWIW) I was using two boxes of wolf gold and PMC M193. I intend to replace the piston assembly with an HK production one and test out hotter ammo loads to see if I can't get it to cycle before I consider it needing attention to the gas ports on the barrel or gas block. Post firing inspection of parts showed no premature wear or marring on the bolt lugs. So that's a bit comforting.
Fitment of everything else was ironically super tight. Crazily. Requiring me to actually use blunt force (hight tech tactical table slam) on my trigger housing to actually get it fully seated in place. I imagine this will wear in and doesn't seem bad tbh. But I believe it to be note-worthy.
I have dropped the gun off with my smith/good friend whom I trust with my stuff while I am out and he will be doing further evaluation on it/working with Tom as necessary. I felt it was necessary to share my experience to add to the reports of issues/corrections when they arise. I understand others here have experienced Improper BCG fitment and short stroking with weak ammo but has anyone experienced these other issues I have noted? Also didn't get any photos, my bad, I should have.
Overall, I am disappointed in the investment in it's current guise. I am not giving up on the gun FWIW but do think that the first receivers should have been recalled rather than given an extended cam pin as mentioned in my first issue. It seems more like applying a TQ and saying "you're GTG bro." vs. getting on an operating table. Especially if the newer runs for the complete gun builds are not having this fitment problem. If I have learned anything it's to not be an early investor. But this is just a guy sitting in JFK waiting on a flight ranting.
A lot of people had issues no matter what parts were being used. I'm pretty sure all of them that had issues have been resolved most with the help of Tom himself.
Why didn't you send it out to him?