Hello all, Just a quick question I have been dying to know.
So here it is.

I have an HFC DARKHAWK which is basically a glock variant. Glock upper and Sigma Lower.

link for reference: http://www.airsoftpost.com/product_info ... s_id=24935

I wanted to know if I could fit this into a Glock Serpa Holster or Even a Sigma Serpa Holster? Or am I out of luck?

Thank you in advance.

SERPAs are designed for specific models, especially the lower receiver. If it's a Sigma lower, it probably won't fit in the Glock SERPA.

So maybe it will fit the Sigma Serpa Holster? the upper receiver on the glock and sigma are in fact pretty similar.

Similar does not make it the same. If you want, swing by AEX, I have my Glock SERPA holster at the store and we can test fit your gun in the holster to make sure.

Well, I know for sure it won't fit in a GLOCK serpa. The trigger guard is way different. (Serpa holsters basically lock around/in the trigger guard right)
So it might not work out :(