My G36K is a german parts kit build on a TG36 receiver. Though I did replace the old style handguard with the newer style (still have both). I also added the TB paddle that gives you the ability to drop mags using your firing hand finger without repositioning.
![](https://live.staticflickr.com/65535/52068706086_fb3c24f78b_k.jpg)
I added a Griffin 15x1 muzzle device to it for my GA suppressor and have had no issues and not seen any mal-effect.
![](https://live.staticflickr.com/65535/52870346417_75dbcf29f0_k.jpg)
As for the magwell, I opted to use the HK mags, as they work reliably and are fairly inexpensive and accessible. The AR magwell is expensive and makes mag release a bigger issue given the location of the release. I do have a few of the Magpul G36 mags, but for some reason, in my G36, they require a really hard hit to get them to fully seat.