WE M4 bolt stuck

[FENRIR]

Re: WE M4 bolt stuck

That spring is indeed broken!

There should be another spring in front of the NPAS in the print portion of the nozzle. Is it still in the nozzle?
"
I have both springs I can send you if you like. Promise me you'll make a charitable contribution to "The British Legion" or "Soldiers Off The Streets" and I'll send them to you tomorrow or Tuesday.

[messy]

Re: WE M4 bolt stuck

2013-10-13 12.09.11.jpg

pic of teh spring - also when i took the nozzle apart my npas came out....isnt this supposed to have a spring on teh bottom of it? (wasnt installed by me)

[FENRIR]

Re: WE M4 bolt stuck

To replace the spring is easy ..... Only one more pin to go.
1.It is very small and halfway down the nozzle, holing the spring in place. Check both sides of the nozzle as there should be a small hole on one side and a big hole on the other (both are "small" but one smaller than the other)

2. Knock the pin through from the smallest hole ( the pin should be slightly tapered so it only goes in one way)

3. The spring will drop out

At this pint you could pull the two nozzle halves apart to fit your NPAS if you are doing that. If not, when ready to rebuild push the pin through so it takes up approx half of the inside spring hole.

4. Orientate it so the pin is vertical with the pin uppermost.

5. Gently push the new spring into place with the eyelet in position to receive the pin.

6. DO NOT PUSH THE PIN THROUGH YET. Flip the nozzle over so the pin is again vertical, but now facing down. If you got lucky the first time, the eyelet will now be hooked over the pin. Pull on spring to test. If you got it, push pin home. If not, practice makes perfect.

[messy]

Re: WE M4 bolt stuck

having removed the nozzle theres a spring at the end of the carrier looking a bit mangled,

looking inside the nozzle i can see a single spring loop on the pin - looks like it broke.

[FENRIR]

Re: WE M4 bolt stuck

1. Turn the bolt on its side (forward assist groves face down)
2. You should see a small plastic rectangle near the front of the bolt (this is one of the nozzle guides)
3. Remove it with a watchmakers screwdriver or similar.

4. Turn the bolt to its upright position as it sits in the gun.
5. Use a screwdriver to remove the roller bearing arm assembly (flat blade if not been messed with)
6. Now use a small Phillips driver to remove the top nozzle guide.

7. Lay bolt on side with forward assist groves face up.
8. In amongst the groves you will see a pin, knock this through.
9. Withdraw nozzle from bolt carrie.

There should be a nice, even, in tact spring attached to the plastic nozzle still.

Check all for damage and wear and lube up. I prefer gun oil over greases for luring my GBBRs

To rebuild: look down the bolt carrier and you will make out a small cutting in the back, this is where the spring's eyelet needs to fit in order for the pin to pass through to hold it in place.

1. Simply align the nozzle so the eyelet is square to the cutting (even if the nozzle is not square to accomplish this)
2. Push the nozzle in whilst holding the bolt up to a light and looking through the pin hole.
3. if you are slow enough, you should make out the spring eyelet passing the pin hole.
4. Replace pin (pointed end of pin entering from smooth side of bolt so it rests near forward assist grooves)
5. Twist nozzle to its square position and refit nozzle guides.

Hope this helps

[messy]

Re: WE M4 bolt stuck

alright! :D making progress - having totally pulled it apart i have the bolt free, cant obviously see what the issue is but i dont think the nozzle is sitting in the carrier properly - dont think its going in as far as it should which was what was causing the jam.

if i try to push it inside the carrier it goes a fair way easily and then a bit more with a feeling like its scratching its sides on something and then it stops with about 2cm or so sticking out the front.

tried taking it out, comes most of the way (i can see the o ring) but then stops coming - didnt want to try and force it out in cas i was missing something i needed to do

[dave38x]

Re: WE M4 bolt stuck

It's an approach that's worked for me more than once!

Sent from outer space

[FENRIR]

Re: WE M4 bolt stuck

Basically the point FENRIR is trying to make (as far as I can tell) is dismantle the whole gun around the bolt until it comes out :P

Errr, yeah......... That would seem to be the path we are walking down!

[dave38x]

Re: WE M4 bolt stuck

Basically the point FENRIR is trying to make (as far as I can tell) is dismantle the whole gun around the bolt until it comes out :P

[FENRIR]

Re: WE M4 bolt stuck

Gas rod on the real thing..... Just for looks on airsoft.... Even GBBRs.

You will need to remove your front sight as this is what holds the rod in place.

There should be 2 pins on the underneath of the sight that need knocking through. There should be a grub screw too, possibly hidden under the front sling mount. That may need the pin knocking through too in order to expose the grub screw.

[messy]

Re: WE M4 bolt stuck

silver bar above the barrel seems to be in the way of it turning

[FENRIR]

Re: WE M4 bolt stuck

In an ideal world you will have a special tool. An armourers wrench. In the absence of that, plumbers slip joint pliers or mole grips will do the job nicely.

You need to pop off the front hand guard to expose the pointy star shape internals of the Delta ring. You need to grip these as the actual spring loaded ring is free floating and will spin all day without having any effect.

[messy]

Re: WE M4 bolt stuck

not sure how to remove the d-ring, is this a twisty thing?

[FENRIR]

Re: WE M4 bolt stuck

Hmmmmmm.

Nozzle square?
Bolt free?
Stock tube removed?

Last chance saloon......

Remove both body pins after trying to cock the hammer. If that doesn't free it all off, remove the barrel nut / delta ring. There should then be nothing stopping the the bolt from coming forwards unless the trigger mech is somehow broke and blocking it.

- - - Updated - - -

FENRIR is incorrect, you cannot simply remove the stock tube and slide the bolt out of the back of the receiver as the gas key (well, it's not really a gas key, as it's not a real AR - but thats the best thing to call it), cannot possibly pass the back of the charging handle, or through the back end of the receiver

Good point, well presented!!!!

[Heinz]

Re: WE M4 bolt stuck

FENRIR is incorrect, you cannot simply remove the stock tube and slide the bolt out of the back of the receiver as the gas key (well, it's not really a gas key, as it's not a real AR - but thats the best thing to call it), cannot possibly pass the back of the charging handle, or through the back end of the receiver.

Check for obstructions in front of the bolt, and damage to the plastic nozzle assembly thats stopping it going into battery.