Jyn Erso's A-180 is nice on the AW Custom P-08. As are the DLT-19s based on the Red Wolf Airsoft MG-34 iteration. (And non-airsoft Denix repros…)
For me, I suppose it’s any prop based on a real world item that is too rare or expensive to realistically make into a replica….where you also want a simulation of firing something.
There are a bunch of live fire DL-44s out there based on real Mausers, but I’m wondering how many actual Luger based A-180s there are. I know it’s not nearly as iconic as Han’s blaster, but still.
OTOH, It’s hard for some (me) to justify the $$$ to convert a real firearm into a static display. It’s also hard to find an actual firearm that is in poor enough condition to prevent use/collectibility but good enough to make into a prop. Yes, you can go the Blaster Factory or similar route and that’s fine too, but sometimes you just want a working trigger that fires something.
I’d love an airsoft version of Mando’s Bergman 1896 built to the same level of accuracy and construction quality as BF’s current offering.