Can't put my KA M4 back together

Cifyra · April 21st, 2012, 17:32

I tried to rear wire my KA gearbox and switch it to deans. So I bought the G&P switch assembly+deans that came pre wired. G&G Wires are very high quality, very thick. However, they are too thick. As a result, the gearbox doesn't sit all the way into the lower receiver.

I tried hammering the wires to make it flatter but I still only managed to get it in a bit further. I said fk it, and hammered the body pin through the gearbox. However, when it went out the other side, it is horridly misaligned, and it won't go through all the way. See picture.

Afterwards, I thought maybe if I had a buffer tube screw through the gearbox, there would be enough pressure to flatten the wire enough to get the body pin all the way through. It is then I realized I do not have a philips screwdriver that is longer than the buffer tube.

*headaches*

G&P's wire is really nice, I don't really want to cut it open. On the other hand, KA M4 has ridiculously tight tolerances, even if the quality of their receiver is exceptional. Oh man...

HKGhost · April 21st, 2012, 17:55

By the looks of it, you have the wires coming out of the wrong holes. They should be coming out of the upper hole so the gearbox will fit into the lower receiver.

Cifyra · April 21st, 2012, 18:05

Yep that's what someone else told me, will re-wire it again, thanks!

horto · April 21st, 2012, 18:27

I think your problem is the hammer you were using to ruin your gun was too small. Try a bigger hammer.

Cifyra · April 21st, 2012, 20:33

Update, upper doesn't go into the lower. There is a gap that I cannot seem to be able to close.

Kingsix · April 21st, 2012, 20:46

Quote:

Originally Posted by Cifyra

I tried hammering the wires to make it flatter but I still only managed to get it in a bit further. I said fk it, and hammered the body pin through the gearbox. However, when it went out the other side, it is horridly misaligned, and it won't go through all the way. See picture.

Afterwards, I thought maybe if I had a buffer tube screw through the gearbox, there would be enough pressure to flatten the wire enough to get the body pin all the way through. It is then I realized I do not have a philips screwdriver that is longer than the buffer tube.

Oh man you must be an animal, you have to treat wires with respect or they will short on you.

I wouldn't be surprised if your wire insulation is torn and nicked.

Fuzzy · April 21st, 2012, 20:52

The hop up chamber is not seated into the gearbox. The chamber is probably a little bit too high so it isn't lining up with the opening at the front of the gearbox. Try matching up the hopup chamber to the gearbox before sliding the upper and the lower together.

jamex · April 21st, 2012, 21:01

An awesome gun doc from here was working on my king arms m4 while i observed and it was a tight fit as well. Easy to open .... Tough to close. Rubber mallet with a gentle touch will guide it in. Watch the hop up cover, as mine liked to slide out of place while seating everything in its final place. Some feathering of the bolt catch while you work the mating of upper and lower reciever should help out.

I'm thinking this latest batch from king arms are tight fits all around.

Cifyra · April 21st, 2012, 21:15

Quote:

Originally Posted by Kingsix

Oh man you must be an animal, you have to treat wires with respect or they will short on you.

I wouldn't be surprised if your wire insulation is torn and nicked.

I thought you said "you have to treat your wives with respect".
That's when I put my King Arms in my kitchen.

Edit: to get my food from the microwave. =_=

Oh, and everything is aligned now, but there is still like 2mm of space left. I think rubber mallet might be the way to go.

Cifyra · April 21st, 2012, 21:36

Anyone here know what this left over screw is for? It's the only screw left over in my M4 screws box after I put my M4 back together. It's a 1.5mm allen screw.

HKGhost · April 21st, 2012, 22:25

that screw is for the buffer tube cap.

Cifyra · April 21st, 2012, 22:40

Quote:

Originally Posted by HKGhost

that screw is for the buffer tube cap.

Right-o, thanks m8!

MaciekA · April 21st, 2012, 23:32

The KA receivers are insanely hard to get back together, even with front wiring.

The only way we could get them back together properly was to slide the receivers together first, THEN do the body pins and pistol grip.

XZIVR · April 22nd, 2012, 00:17

dont use a mallet, just push down on the back of the upper as you push it back. That's all I need to do with mine.

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April 21st, 2012, 17:32	#1
Cifyra Iskaryot Trader rating Join Date: Jan 2011 Location: Mississauga/Ottawa	Can't put my KA M4 back together I tried to rear wire my KA gearbox and switch it to deans. So I bought the G&P switch assembly+deans that came pre wired. G&G Wires are very high quality, very thick. However, they are too thick. As a result, the gearbox doesn't sit all the way into the lower receiver. I tried hammering the wires to make it flatter but I still only managed to get it in a bit further. I said fk it, and hammered the body pin through the gearbox. However, when it went out the other side, it is horridly misaligned, and it won't go through all the way. See picture. Afterwards, I thought maybe if I had a buffer tube screw through the gearbox, there would be enough pressure to flatten the wire enough to get the body pin all the way through. It is then I realized I do not have a philips screwdriver that is longer than the buffer tube. headaches G&P's wire is really nice, I don't really want to cut it open. On the other hand, KA M4 has ridiculously tight tolerances, even if the quality of their receiver is exceptional. Oh man... __________________

April 21st, 2012, 17:55	#2
HKGhost Trader rating Join Date: Nov 2009 Location: Mississauga, ON	By the looks of it, you have the wires coming out of the wrong holes. They should be coming out of the upper hole so the gearbox will fit into the lower receiver. __________________ Please email me as I'm not on ASC too often. Custom Build \| Upgrades \| Repairs \| Maintenance Contact: ghostgunwork@gmail.com / Private Message

April 21st, 2012, 18:05	#3
Cifyra Iskaryot Trader rating Join Date: Jan 2011 Location: Mississauga/Ottawa	Yep that's what someone else told me, will re-wire it again, thanks! __________________

April 21st, 2012, 18:27	#4
horto Trader rating Join Date: Jun 2009 Location: Toronto	I think your problem is the hammer you were using to ruin your gun was too small. Try a bigger hammer. __________________ H-61 "Acta non verba" They see us rollin, they hatin...

April 21st, 2012, 20:33	#5
Cifyra Iskaryot Trader rating Join Date: Jan 2011 Location: Mississauga/Ottawa	Update, upper doesn't go into the lower. There is a gap that I cannot seem to be able to close. __________________

April 21st, 2012, 20:52	#7
Fuzzy Trader rating Join Date: May 2011	The hop up chamber is not seated into the gearbox. The chamber is probably a little bit too high so it isn't lining up with the opening at the front of the gearbox. Try matching up the hopup chamber to the gearbox before sliding the upper and the lower together.

April 21st, 2012, 21:01	#8
jamex Trader rating Join Date: Jan 2012 Location: Burlington, ON	An awesome gun doc from here was working on my king arms m4 while i observed and it was a tight fit as well. Easy to open .... Tough to close. Rubber mallet with a gentle touch will guide it in. Watch the hop up cover, as mine liked to slide out of place while seating everything in its final place. Some feathering of the bolt catch while you work the mating of upper and lower reciever should help out. I'm thinking this latest batch from king arms are tight fits all around. Last edited by jamex; April 21st, 2012 at 21:05..

April 21st, 2012, 21:36	#10
Cifyra Iskaryot Trader rating Join Date: Jan 2011 Location: Mississauga/Ottawa	Anyone here know what this left over screw is for? It's the only screw left over in my M4 screws box after I put my M4 back together. It's a 1.5mm allen screw. __________________

April 21st, 2012, 22:25	#11
HKGhost Trader rating Join Date: Nov 2009 Location: Mississauga, ON	that screw is for the buffer tube cap. __________________ Please email me as I'm not on ASC too often. Custom Build \| Upgrades \| Repairs \| Maintenance Contact: ghostgunwork@gmail.com / Private Message

April 21st, 2012, 23:32	#13
MaciekA Trader rating Join Date: Jun 2011 Location: Portland, Oregon, USA	The KA receivers are insanely hard to get back together, even with front wiring. The only way we could get them back together properly was to slide the receivers together first, THEN do the body pins and pistol grip. __________________ "Mah check" Now you know

April 22nd, 2012, 00:17	#14
XZIVR Trader rating Join Date: Mar 2011 Location: Calgary, AB	dont use a mallet, just push down on the back of the upper as you push it back. That's all I need to do with mine.

Can't put my KA M4 back together

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