ICS M4 firing issues

delta76 · September 28th, 2009, 22:32

I'm experiencing issues with misfiring in an ICS M4. The gun was functioning perfectly until I recently installed a metal body.

This issue is confusing because most of the usual variables don't seem to apply. The first shot jams (I'm assuming in the hop-unit and the next shot bumps it out and it falls out of the barrel and subsequent shots do the same until the mag is removed and the final chambered round is shot out with normal fps. The mag is obviously feeding and there are no issues with air seal as the final shot consistently fires at normal fps. The tappet plate is fine, the hop-up rubber is in great shape and properly installed, I installed a modify nozzle and replaced it with the original ICS nozzle to make sure any compatibility issues weren't to blame (same issues with the stock nozzle). I'm wondering if ICS require propriatary sleeves? I've got a guarder clear installed, could that be causing the jamming? Has anyone experienced similar issues when installing a metal body or misfiring with ICS propriatary hop-ups?

Skladfin · September 29th, 2009, 13:43

which metal body did install(question mark dont work lol)

delta76 · September 29th, 2009, 13:55

It's an older generation Olympic Arms body.

Kos-Mos · September 29th, 2009, 16:40

Double check for a crack in the hop-up body.

also, if your mechbox do not have a hole to install the cross-pin (if you have the black lower mechbox) it is needed when using the older metal bodies.

You can simply make the hole, but make sure you are certain where to make it.

delta76 · September 29th, 2009, 17:34

Quote:

Originally Posted by Kos-Mos

Double check for a crack in the hop-up body.

also, if your mechbox do not have a hole to install the cross-pin (if you have the black lower mechbox) it is needed when using the older metal bodies.

You can simply make the hole, but make sure you are certain where to make it.

Well that is news to me. I got the mechbox pin with the body and realized I couldn't make use of it (I do have the black lower mechbox). Thanks for the info, I'm guessing the issue is the mechbox is sitting too loosely in the body? Although the upper mechbox is extremely firm in the body and serves to hold the lower in place.

testtube · September 30th, 2009, 07:25

it's either a barel alignment problem or as stated the mechbox is floating.

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September 28th, 2009, 22:32	#1
delta76 Trader rating Join Date: Dec 2008 Location: Toronto	ICS M4 firing issues I'm experiencing issues with misfiring in an ICS M4. The gun was functioning perfectly until I recently installed a metal body. This issue is confusing because most of the usual variables don't seem to apply. The first shot jams (I'm assuming in the hop-unit and the next shot bumps it out and it falls out of the barrel and subsequent shots do the same until the mag is removed and the final chambered round is shot out with normal fps. The mag is obviously feeding and there are no issues with air seal as the final shot consistently fires at normal fps. The tappet plate is fine, the hop-up rubber is in great shape and properly installed, I installed a modify nozzle and replaced it with the original ICS nozzle to make sure any compatibility issues weren't to blame (same issues with the stock nozzle). I'm wondering if ICS require propriatary sleeves? I've got a guarder clear installed, could that be causing the jamming? Has anyone experienced similar issues when installing a metal body or misfiring with ICS propriatary hop-ups?

September 29th, 2009, 13:43	#2
Skladfin Trader rating Join Date: Dec 2006 Location: Glace Bay, Nova Scotia	which metal body did install(question mark dont work lol)

September 29th, 2009, 13:55	#3
delta76 Trader rating Join Date: Dec 2008 Location: Toronto	It's an older generation Olympic Arms body.

September 30th, 2009, 07:25	#6
testtube A Total Bastard Trader rating Join Date: Apr 2003 Location: Ottawa,Ont	it's either a barel alignment problem or as stated the mechbox is floating.

ICS M4 firing issues

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