Airsoft Canada - View Single Post - [Solved]Trigger lockup by switching from full auto to semi

Slodin · October 27th, 2015, 00:52

I finally had time to take the gearbox apart from this KA m4 that I bought from someone who said it has semi problem and his brother opened it..Okay, not a big deal..(original problem was that it skips one trigger pull, so no shoot, shoot, no shoot, shoot) I can hear that the gears seems to be over spinning or something..

After I open the gearbox, I immediately noticed the the anti-reversal latch's spring is installed backwards. Also the spring seems shorter than normal (usually the spring arm on the object itself wraps to the top of the anti-reversal latch, this one doesn't)

After I did that, I also checked trigger contacts, cut off lever and general wear & tear on the internals..surprisingly, nothing seems worn..So I was like great, put it back together.

now semi shoots fine now..HOWEVER, every time I switch to full auto, shoot a few rounds and then go back to semi, semi would lockup. To clear the lock up, I need to switch to full auto again, shoot a few rounds, and then semi would start to work. The semi shot after the clear seems to be weaker tho...

Im not sure what's wrong at this point..

October 27th, 2015, 00:52	#1
Slodin Trader rating Join Date: Apr 2014 Location: Surrey B.C	[Solved]Trigger lockup by switching from full auto to semi I finally had time to take the gearbox apart from this KA m4 that I bought from someone who said it has semi problem and his brother opened it..Okay, not a big deal..(original problem was that it skips one trigger pull, so no shoot, shoot, no shoot, shoot) I can hear that the gears seems to be over spinning or something.. After I open the gearbox, I immediately noticed the the anti-reversal latch's spring is installed backwards. Also the spring seems shorter than normal (usually the spring arm on the object itself wraps to the top of the anti-reversal latch, this one doesn't) After I did that, I also checked trigger contacts, cut off lever and general wear & tear on the internals..surprisingly, nothing seems worn..So I was like great, put it back together. now semi shoots fine now..HOWEVER, every time I switch to full auto, shoot a few rounds and then go back to semi, semi would lockup. To clear the lock up, I need to switch to full auto again, shoot a few rounds, and then semi would start to work. The semi shot after the clear seems to be weaker tho... Im not sure what's wrong at this point.. __________________ Last edited by Slodin; October 29th, 2015 at 22:43..