Your best option is either a Perun Optical V2 MOSFET,
or rip the G&G DSG out and replace with SHS DSG with 9mm bushings...
or JB Weld something to create crude cams for ASTER to detect
(it may not need very large pronounced cams created as the axle is larger 5mm
compared to reg 3mm axle, there is a slight risk this large sector axle may confuse
the ASTER, but the radius would only be 2.5mm compared to 1.5mm &
the height of any cam would be greater than this, so it should be possible imho)
Either way there is some cost/work involved,
The Perun would be maybe the best option if you could swap the ASTER for a Perun Optical ???
(ASTER is just under $70 on Evike & Perun is just over $70)
The ASTER is a decent option for boxes where say the 2-part Titan needs modification to box
to avoid fouling/shorting on some re-enforced boxes - think Krytac boxes need a bit of modding
Where the ASTER is a one piece unit, so no risk of fouling/short from top half of unit
(ergh - coz it doesn't have a top half on ASTER)
Unfortunately - it reads the sector COL cam, which normally would work fine in almost any v2 box
Alas coz the G&G's HC05 DSG has no cam(s) at all it won't work properly
so make the cams like TSG vid showed & test/retest
or use the Perun v2 Optical
I suggest you try & read some of the modifications I did to mine a while back,
You can skip most of me moaning about it, but your cylinder might have a hole drilled in it too
But focus or translate what stuff I did when I opened it...
One day I might fit a Perun in mine,
But it is a quirky gun as is with no semi.
G&G did this with no semi to avoid copyright from Seigtek/Riot,
Who had the idea/concept of the DSG.
Shame - could have been an awesome gun,
But as usual G&G didn't quite get it right
So HC05 owners are left with a CQB gun that doesn't fire on semi
and left to ponder, what way is best to finish the gun that G&G failed to do
it's so annoying, coz G&G did made a clone of Riot's DSG with cams on 3mm axles
https://www.guay2.com/en/product/detail-996
But for legal reasons I guess, went with a bespoke 5mm no semi one instead
to make some weird, odd lemony pig of a FireHawk DSG instead
Where as, G&G could have cut a deal with Riot perhaps
and/or approach Perun and buy in bulk the v2 optical
plus also their better ETU - now ETU++ than make their own crappy DairyLea ETU
Naaahhh, they wouldn't do that...
Why not ???
Specna Arms use Gate mosfets in some of their guns
from the X-ASR, also the ASTER and I think the Titan too
Once again, G&G let their pride get in the way
or rested on their laurels, allowing others to catch up & even surpass them sometimes