KJW M9 cycling problem

digital_blue · March 7th, 2009, 23:53

I just pulled my KJW M9 vertec from storage and after gassing up, it doesn't seem to be cycling properly. It will fire when the trigger is pulled but the slide will not blow back enough to rechamber another round. The slide only comes back enough to put the hammer back to half cock but will not cock it completely. All the usual suspects; low propane, bad mag, worn/damaged seals, lubrication, rocket valve and such have been checked and ruled out. I have tried dry-firing the gun but the slide still refuses to cycle completely. I don't feel any significant resistance when the slide is manually racked so I doubt there is any obstruction. Anyone have this problem before?

thanks

Styrak · March 8th, 2009, 00:03

Light strikes on the mag valve due to a weak hammer spring?

lemegacool · March 8th, 2009, 00:28

what styrak said sound right! you could stretch it a little or buy a new one, it could also be a cracked loading muzzle or worn piston...

scarletsnake · April 26th, 2009, 20:58

I seem to be having the same problem. I just ordered the King Arms complete spring set and a new inner barrel. A most troublesome gun, the KJW M9.
Busted trigger spring, inner barrel, mag flies out when I shoot and slide doesnt cycle completely...

lemegacool · April 26th, 2009, 21:04

Quote:

Originally Posted by scarletsnake

I seem to be having the same problem. I just ordered the King Arms complete spring set and a new inner barrel. A most troublesome gun, the KJW M9.
Busted trigger spring, inner barrel, mag flies out when I shoot and slide doesnt cycle completely...

you forgot a new mag catch

scarletsnake · April 26th, 2009, 21:10

yep. that I did

Will place it on my next order tho :P
I just got an AKs-74, have an MK43 and M16A4 on the way, along with some custom 1911 parts that cost more than the AK itself :P
The mag catch will have to wait

Crunchmeister · April 26th, 2009, 21:10

Quote:

Originally Posted by lemegacool

you forgot a new mag catch

Yup. Had that issue with mine. You can always reverse the mag catch by selling the gun up for left-hand function. That's a stop-gap solution until you get another mag catch.

scarletsnake · April 26th, 2009, 21:16

well i wont be using it anytime soon, got the 1911 as a substitute but thanks for the advice. Its actually a great gun, just wish I knew what I had to order with the GBB itself so I wouldnt have to buy the extra parts seperately.

lemegacool · April 26th, 2009, 21:18

also look at the inside of the loading muzzle for any cracks, this could explain the bad cycling

scarletsnake · April 26th, 2009, 21:23

feck! the bb dropping out of the barrel was due to the hop up??!

Now I've got a new inner barrel on the way that I dont even have use for.

j3anius · May 4th, 2009, 17:22

Sorry to jack the thread but I seem to have the same problem on my kjw m9. Would someone please be able to show me which # part on this diagram http://tech.airsoftcanada.com/KJ/kj-m9s.jpg is the hammer spring and maybe even be able to tell me on how I can get to it? Thanks you!!
edit: i'm guessing it's part #51 but I would just like to be 100% sure.

jesster202 · May 4th, 2009, 18:22

its number 51 to get to it remove grils if its the v model or the regular m9 go to were the lanyard look or were it should be press down on it a bit derictly above their is a pin you have to knock it out then the lanyar will come out or the cap on the vertech model after that pull the spring out replace and repeat steps

j3anius · May 5th, 2009, 15:02

thanks for the reply

Well I've been trying to punch out that pin but it won't budge. Is it always that difficult for it to come out?

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March 7th, 2009, 23:53	#1
digital_blue Trader rating Join Date: Aug 2006 Location: In the sticks	KJW M9 cycling problem I just pulled my KJW M9 vertec from storage and after gassing up, it doesn't seem to be cycling properly. It will fire when the trigger is pulled but the slide will not blow back enough to rechamber another round. The slide only comes back enough to put the hammer back to half cock but will not cock it completely. All the usual suspects; low propane, bad mag, worn/damaged seals, lubrication, rocket valve and such have been checked and ruled out. I have tried dry-firing the gun but the slide still refuses to cycle completely. I don't feel any significant resistance when the slide is manually racked so I doubt there is any obstruction. Anyone have this problem before? thanks

March 8th, 2009, 00:03	#2
Styrak Trader rating Join Date: Jan 2007 Location: Saskatoon, SK	Light strikes on the mag valve due to a weak hammer spring? __________________ Airsoft Sales and Repair/Upgrade Services

March 8th, 2009, 00:28	#3
lemegacool Trader rating Join Date: Aug 2008 Location: notre dame des prairies /quebec	what styrak said sound right! you could stretch it a little or buy a new one, it could also be a cracked loading muzzle or worn piston... __________________ member of fire team NOM. my other regular forum: www.toyotanation.com / gen3,gen4 camry

April 26th, 2009, 20:58	#4
scarletsnake Trader rating Join Date: Oct 2008	I seem to be having the same problem. I just ordered the King Arms complete spring set and a new inner barrel. A most troublesome gun, the KJW M9. Busted trigger spring, inner barrel, mag flies out when I shoot and slide doesnt cycle completely...

April 26th, 2009, 21:10	#6
scarletsnake Trader rating Join Date: Oct 2008	yep. that I did Will place it on my next order tho :P I just got an AKs-74, have an MK43 and M16A4 on the way, along with some custom 1911 parts that cost more than the AK itself :P The mag catch will have to wait

April 26th, 2009, 21:16	#8
scarletsnake Trader rating Join Date: Oct 2008	well i wont be using it anytime soon, got the 1911 as a substitute but thanks for the advice. Its actually a great gun, just wish I knew what I had to order with the GBB itself so I wouldnt have to buy the extra parts seperately.

April 26th, 2009, 21:18	#9
lemegacool Trader rating Join Date: Aug 2008 Location: notre dame des prairies /quebec	also look at the inside of the loading muzzle for any cracks, this could explain the bad cycling __________________ member of fire team NOM. my other regular forum: www.toyotanation.com / gen3,gen4 camry

April 26th, 2009, 21:23	#10
scarletsnake Trader rating Join Date: Oct 2008	feck! the bb dropping out of the barrel was due to the hop up??! Now I've got a new inner barrel on the way that I dont even have use for.

May 4th, 2009, 17:22	#11
j3anius Trader rating Join Date: Dec 2005 Location: Mississauga, Ontario	Sorry to jack the thread but I seem to have the same problem on my kjw m9. Would someone please be able to show me which # part on this diagram http://tech.airsoftcanada.com/KJ/kj-m9s.jpg is the hammer spring and maybe even be able to tell me on how I can get to it? Thanks you!! edit: i'm guessing it's part #51 but I would just like to be 100% sure. Last edited by j3anius; May 4th, 2009 at 17:30..

May 4th, 2009, 18:22	#12
jesster202 Trader rating Join Date: Dec 2007 Location: London Ontario	its number 51 to get to it remove grils if its the v model or the regular m9 go to were the lanyard look or were it should be press down on it a bit derictly above their is a pin you have to knock it out then the lanyar will come out or the cap on the vertech model after that pull the spring out replace and repeat steps __________________ *MY COLLECTION* *AEG* M4 coustom full metal with king arms metal body //\\ Galaxy MP5 PDW *GAS/SPRING* KJW M9 FULLY UPGRADED //\\KWA FULL SIZE USP //\\ TF MAC11 *GEAR* Coyote Brown CIRAS

May 5th, 2009, 15:02	#13
j3anius Trader rating Join Date: Dec 2005 Location: Mississauga, Ontario	thanks for the reply Well I've been trying to punch out that pin but it won't budge. Is it always that difficult for it to come out?

KJW M9 cycling problem

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