The ASG Armalite M15A4 saga

[pyromancer6]

I inheriated an ASG M15A4, aka a Classic Army [if I'm not mistaken] M4 replica at the start of the year as payment for fixing an otherwise dead CYMA CAR-15, getting it back to funcuatal with a fresh ZEUS mosfet and an incredibly shitty solder job - besides the point:

I've got an old ass ASG M15A4 with a host of problems, and I hope to fix some of them in this thread and ask for some input as google is useless as always and information on these admittedly pretty old by now pews is annoying to come by.

First off - the spring guide has suffered and one of the prongs has snapped off:


I tried a SHS V2 replacement from ak2m4 and as you can see


It doesn't fit whatsoever, probably because it's for a non QD gearbox and I have terrible reading skills - any reccomendations for one that might be the correct shape?

Secondly - I lost my safety and I'm assuming it's damage to the cut-off lever because I can feel a sharp point on it where something's sheared off but standard V2 cut-off levers don't fit this particular gearbox/trigger assembly type - anybody know for starters what I have here and secondly where I can source a replacement?

 

A third thing is that the battery and wires get particularly hot on firing and I'm assuming it's because of the terrible amalgamation of connectors I'm using - any pointers on what would be a suitable replacement outside of just cutting the tamiya-connector and replacing it with a straight deans one? You can see the little space QD connectors that are required to get the wires through the front look particularly nasty. I've changed out the 20A glass fuse and it still does it to rule that off.



It's got a set of 13:1s, XT bearings, XT fan motor, XT compression set and a M120 to try and get it up to power, alongside a XT 380mm 6.00 barrel, ZCI plastic rotary and either a ML super macaron or a 4QUAD rubber.

Any pointers would be awesome - it seems to 'work' but I'd like to fix issues prematurely rather than let the gun explode itself like last time:
 

Spoiler

(This was PME caused by a Solink brushless I threw in randomly to see what'd happen - which happened on the first gameday of playing after actually putting a few rounds through it - hence the change in gearset)

 

Edited 15 hours ago by pyromancer6

[Colin Allen]

That cutoff lever looks ok unless the lug for the spring is missing; I doubt that you will be able to get a replacement for it.  You might be well advised to replace the gearbox; if you do, I would make the standard recommendation of fitting a Perun Hybrid.

 

Regarding the overheating, If you do not replace the gearbox, I would advise replacing the wiring, as well as checking the shimming.  Any two lug QD spring guide should fit, albeit possibly with a little filing of the lugs.

Edited 11 hours ago by Colin Allen

[pyromancer6]

2 hours ago, Colin Allen said:

That cutoff lever looks ok unless the lug for the spring is missing; I doubt that you will be able to get a replacement for it.  You might be well advised to replace the gearbox; if you do, I would make the standard recommendation of fitting a Perun Hybrid.

 

Regarding the overheating, If you do not replace the gearbox, I would advise replacing the wiring, as well as checking the shimming.  Any two lug QD spring guide should fit, albeit possibly with a little filing of the lugs.

Tried in the past to fit a QD delta armouries V2 into it but no dice for whatever strange reason - maybe an E&C will fair a little better in the future.

I've found a QD spring guide that looks to fit from bullseye, so that's been ordered and after testing power after the fresh rebuild #383 (adding the compression parts) power's jumped all the way up from about 0.83J to around 1.3J with the hop set -  I'll be downgrading the spring to a M110 or M100 when the new guide arrives to save me taking it out of the receiver twice (as it's from the era where QD was just the gearbox, not true QD)

It's a shame about not being able to replace the cut-off with a new one as I'm pretty sure the switch assembly in this particular gearbox uses it as a blocker for the trigger rather than having it be by the trigger like your typical mechanical safety ala CYMA or similar, and considering it's meant to be a 'backup' or loaner gun I'm not too keen on jumping straight into a fresh gearbox w/ a perun just yet because at that point it gets into ship of theseus territory and I've got a few other unfinshed projects I'd rather plop the Perun I already have lined up into when time and money permits [need a dremel]