Theres a bunch of HK Glocks that are all grouped under WE. I believe HK3P made the trademarked ones, whereas WE's official ones don't have trades to avoid the whole Glock suing thing again.
From what I've read they're TM clones, so most parts should be compatible (aside from possible fitment issues due to manufacturing tolerances)
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H&K G36c (KWA) / Glock 18c (TM) / Kimber LAPD SWAT Custom (TM) / Mossberg M500 (ACM)
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