their service is fine; it wasn't exactly fast nor slow so its nothing noteworthy far as that's concerned. Ultimately i purchased a sten mag adapter for an ar lower at first in hopes up trying to reverse engineer it because no-one else at the time had a free version of their own (or at-least not visible to the usual gun-cad circles networked within the internet ).

Of course where upon receival and cursory inspection of mine i quickly realized that even were i skilled enough (I'm not) to model an identical example for everyone to have for free the average hobbyist this is for whom is interested in saving $50 Is also likely too frugal/broke to own a printer capable of printing the sort of engineering filament required to withstand the stress of a fully loaded sten mag pressing against the adapters catch. Anyone whos loaded a sten mag without a loading tool knows just how strong these springs are when compressed.

I don't know how the sten adapter was printed as in: what method was used (fdma resin Ect.) or what filament was used although it looks like it could be nylon printed use SLS. It didn't appear to have any layer lines you'll notice from a print coming from fdma printers. regardless of the finish, presence of layerlines or lack thereof I would %100 buy another one of these if i had need of an adapter. works great with both vintage and printed mags too.