M4 miss loading

grenadeguy06 · June 26th, 2013, 17:39

So I have a G&G m4 commando that had pneumatic blowback (I altered it to not be anymore). When I was trying out some .25 gram bbs every third shot or so would shoot 2 bbs out. I have tried with two different brand of mags and both do this. I also noticed with .20's or .25's three or so bbs would get stuck in the mag well when I take a mag out. Any help would be much appreciated.

Hectic · June 26th, 2013, 17:57

Do you mean 2 or 3 bbs fall out when you remove the mag?
Thats normal on most aegs. Sometimes even 4 or 5.

As for the missfeeding. What kind of bbs are you using. Crappy bbs will do that

Ron-E · June 26th, 2013, 18:18

Sounds to me that you are not getting enough compression to push out the bbs. How did you disable blowback?? Did you change the cylinder? if you are still using the same cylinder...did you seal the port that directs air for the blowback piston? I had did the same to my G&G Commando M4. You must ensure that the hole on the cylinder is leak proof or else you will lose compression and therefore, your bbs will drop out of the barrel.

Ron-E · June 26th, 2013, 18:19

Also helps if you chrono the gun and see if you're getting the desired fps.

grenadeguy06 · June 26th, 2013, 18:22

The brand of 25's are firepower. To disable the blowback I did plug the port. Perhaps I did a crappy job on sealing it.

Ron-E · June 26th, 2013, 18:35

If you don't mind me asking...How did you seal the port?

grenadeguy06 · June 26th, 2013, 18:43

I used silicone sealant.

ThunderCactus · June 26th, 2013, 20:25

might be interfering with the O-ring of the piston head preventing it from sealing at that point?

Styrak · June 26th, 2013, 20:30

Quote:

Originally Posted by grenadeguy06

The brand of 25's are firepower. To disable the blowback I did plug the port. Perhaps I did a crappy job on sealing it.

Crappy BB's. Use good BB's and either your problem will be solved, or you already damaged your hopup rubber and you have to get it replaced, then use only good BB's.

Sounds like your problem is crappy BB's, and you will continue to have issues even if you replace your hopup rubber.

grenadeguy06 · June 30th, 2013, 00:41

is BB Bastard a good brand? I thought I heard from somewhere that it is Canadian.

ThunderCactus · June 30th, 2013, 02:01

yes and yes

ccyg8774 · June 30th, 2013, 03:30

I once build a custom AR for a friend... When I test it with my King Arms BBs, everything was fine. When he play with firepower BBs, he have a very bad jamming problem...
Haven't try those firepower BBs myself but sounds like they are not very good.

ThunderCactus · June 30th, 2013, 13:20

I tried firepower BBs when they first came out, just freaking awful.
I used to use flying colors, despite them jamming everyone elses gun, they never jammed any of my 6.03 tightbores, but had 10% less accuracy than KSC perfects.
firepower was 20% less accurate than KSC perfect
metaltechs were 10% less accurate than KSC, and it's the only BB I've ever seen jam a mag.

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June 26th, 2013, 17:39	#1
grenadeguy06 Trader rating Join Date: Aug 2012	M4 miss loading So I have a G&G m4 commando that had pneumatic blowback (I altered it to not be anymore). When I was trying out some .25 gram bbs every third shot or so would shoot 2 bbs out. I have tried with two different brand of mags and both do this. I also noticed with .20's or .25's three or so bbs would get stuck in the mag well when I take a mag out. Any help would be much appreciated.

June 26th, 2013, 18:19	#4
Ron-E reneorantes Trader rating Join Date: Jan 2013 Location: Hamilton, Ontario	Also helps if you chrono the gun and see if you're getting the desired fps. Last edited by Ron-E; June 26th, 2013 at 18:20.. Reason: Mispelling

June 30th, 2013, 03:30	#12
ccyg8774 Trader rating Join Date: Jun 2012 Location: Brampton, ON	I once build a custom AR for a friend... When I test it with my King Arms BBs, everything was fine. When he play with firepower BBs, he have a very bad jamming problem... Haven't try those firepower BBs myself but sounds like they are not very good. __________________

June 26th, 2013, 18:18	#3
Ron-E reneorantes Trader rating Join Date: Jan 2013 Location: Hamilton, Ontario	Sounds to me that you are not getting enough compression to push out the bbs. How did you disable blowback?? Did you change the cylinder? if you are still using the same cylinder...did you seal the port that directs air for the blowback piston? I had did the same to my G&G Commando M4. You must ensure that the hole on the cylinder is leak proof or else you will lose compression and therefore, your bbs will drop out of the barrel.

June 26th, 2013, 18:22	#5
grenadeguy06 Trader rating Join Date: Aug 2012	The brand of 25's are firepower. To disable the blowback I did plug the port. Perhaps I did a crappy job on sealing it.

June 26th, 2013, 18:35	#6
Ron-E reneorantes Trader rating Join Date: Jan 2013 Location: Hamilton, Ontario	If you don't mind me asking...How did you seal the port?

June 26th, 2013, 18:43	#7
grenadeguy06 Trader rating Join Date: Aug 2012	I used silicone sealant.

June 26th, 2013, 20:25	#8
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	might be interfering with the O-ring of the piston head preventing it from sealing at that point?

June 30th, 2013, 00:41	#10
grenadeguy06 Trader rating Join Date: Aug 2012	is BB Bastard a good brand? I thought I heard from somewhere that it is Canadian.

June 30th, 2013, 02:01	#11
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	yes and yes

June 30th, 2013, 13:20	#13
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	I tried firepower BBs when they first came out, just freaking awful. I used to use flying colors, despite them jamming everyone elses gun, they never jammed any of my 6.03 tightbores, but had 10% less accuracy than KSC perfects. firepower was 20% less accurate than KSC perfect metaltechs were 10% less accurate than KSC, and it's the only BB I've ever seen jam a mag.

M4 miss loading

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