I built my first parts kit gun
A pretty simple build compared to other designs, but it was still an interesting process.
https://i.imgur.com/2AYttXy.jpeg
https://i.imgur.com/OQPRfyh.jpeg
I ordered the parts kit from HKParts, and a receiver from DefGunz on GB. The process requires a special reaction rod and an offset receiver wrench that run a few hundred dollars, but I was able to rent a set from a fellow on Reddit.
When I was tightening the barrel nut, the barrel slipped in the receiver and was a few degrees off and had gotten jammed up in the receiver against the alignment pin.
https://i.imgur.com/80Y9nrW.jpeg
I hemmed and hawed for a while about how to go about fixing it. After a couple weeks, I decided to just bang it back out of the receiver and try again. Either its stuck like this forever, useless, or I break it while removing the barrel and it's useless. I bought a brass rod and used my trusty hammer, which worked!
https://i.imgur.com/Hm9brPH.jpeg
I was then able to re-set the barrel and got it properly installed. The barrel nut had to be torqued to 65 ft lbs!!! A scary proposition with a polymer receiver.
https://i.imgur.com/ds7Hkug.jpeg
After that mess, the rest of the build was a piece of cake. I got it put all together, and then it was time for test firing. The idea of a rifle cartridge going off in a plastic gun I put together myself was daunting, so I stuck a laser sight on it and held it at arms length away, LOL!
https://i.imgur.com/ZISGSPE.jpeg
It shot well, its a real flashbang generator. After a couple hundred rounds and I was fairly certain it was unlikely to blow up in my face if it hadn't already, I went ahead and filed an eForm 1. And it came back approved the very next day!
https://i.imgur.com/S1PkrXl.jpeg
Once that was done, I decided the absolutely god awful iron sights had to go. So this is how she sits!
https://i.imgur.com/A5zWOi5.jpeg
