G&G wont switch to full auto

i just fixed my m4 mechbox, the only problem is not it wont flip to full auto. i had to replace the trigger contacts and to make that work i had to replace the selector plate. the new one i got i noticed that the cut out where the disconnect lever is engaged from was a bit shorter so i shaved a little off till it matched to original one but still noting, i still cant flip the selector to full nor will it shoot on full when pushed as far as the selector will go, but when the mechbox is out of the lower receiver and all hooked up the full and semi both work fine when manually selected.

make sure you re-installed the tiny spring that goes between the selector plate and cutoff lever.

-a|ex wrote:make sure you re-installed the tiny spring that goes between the selector plate and cutoff lever.

yep its on there

can the selector lever be moved to the full auto spot? or it does it only shoot semi-auto with the lever on full auto?
the way full auto works is that the selector plate pushes the cut off lever away from the trigger shuttle. this prevents the cut off lever from pushing the trigger shuttle up whenever the trigger is pulled and the gearbox cycles. did you replace the old trigger shuttle (moving trigger block)? check where the cutoff lever pushes it up to see if it's chipped off.

-a|ex wrote:can the selector lever be moved to the full auto spot? or it does it only shoot semi-auto with the switch on full auto?
the way full auto works is that the selector plate pushes up against the cut off lever. this prevents the cut off lever from pushing the trigger shuttle up whenever the trigger is pulled and the gearbox cycles. did you replace the old trigger shuttle (moving trigger block)? check where the cutoff lever pushes it up to see if it's chipped off.

the selector wont even move to the full auto spot when moved by selector on the body but i can activate full auto when the gearbox is out of the body

take the gearbox out of the receiver and see if you can manually move the selector plate freely. when putting the gearbox into the receiver, make sure the selector lever is on safe so it doesn't bind on the selector plate.

-a|ex wrote:take the gearbox out of the receiver and see if you can manually move the selector plate freely. when putting the gearbox into the receiver, make sure the selector lever is on safe so it doesn't bind on the selector plate.

it does move freely and ive been doing that but still nothing.could it be that the shs selector plate is causing it because when i got it like i said it was a tad bit different then the g&g one, but i shaved down the only part of it that looked different.

if you can move the selector plate easily while the gearbox is out of the receiver then check to see if your selector lever is misaligned. it will be difficult to put a screwdriver in to loosen it up, but there is a cover on the other side of the receiver that can be popped outward and re-glued later.

can you take a picture of both selector plates and post them?

-a|ex wrote:if you can move the selector plate easily while the gearbox is out of the receiver then check to see if your selector lever is misaligned. it will be difficult to put a screwdriver in to loosen it up, but there is a cover on the other side of the receiver that can be popped outward and re-glued later.

can you take a picture of both selector plates and post them?

acctualy im just going to leave it as is im just tired of fooling with it but thanks for your help.