Airsoft Canada - View Single Post - ICS-128 Incorrectly shoots in full auto after depressing forward assist knob

Cokeman · March 6th, 2011, 10:37

I have a 2011 ICS M4 gun (ICS-128 S.I.R. Crane Stock) that incorrectly shoots in full auto (when in semi fire mode) after the forward assist knob has been depressed (to release the spring tension).

Here is a video showing the problem (YouTube - 2011-03-06 - ICS-128 FIring Problem). In case the video is not available, it shows:

Gun shooting correctly in both semi and auto fire modes
The forward assist knob is depressed
Gun is in Semi fire mode. Trigger is pulled and the gun shoots a burst in full auto.
Pulling the trigger again, it shoots in semi mode.
Gun shoots correctly in both semi and full auto mode.

This problem is 90% repeatable.

I did search through ASC and came across this thread/solution (SOLVED ICS M4 firing full auto and bursts on Semi-Auto). His solution was to ensure that the forward assist lever was moving smoothly. I checked and mine is moving smoothly.

So, does anybody have any ideas what is causing this problem and a fix?

March 6th, 2011, 10:37	#1
Cokeman a.k.a. az29okg Trader rating Join Date: Jan 2011 Location: Ontario	ICS-128 Incorrectly shoots in full auto after depressing forward assist knob I have a 2011 ICS M4 gun (ICS-128 S.I.R. Crane Stock) that incorrectly shoots in full auto (when in semi fire mode) after the forward assist knob has been depressed (to release the spring tension). Here is a video showing the problem (YouTube - 2011-03-06 - ICS-128 FIring Problem). In case the video is not available, it shows: Gun shooting correctly in both semi and auto fire modes The forward assist knob is depressed Gun is in Semi fire mode. Trigger is pulled and the gun shoots a burst in full auto. Pulling the trigger again, it shoots in semi mode. Gun shoots correctly in both semi and full auto mode. This problem is 90% repeatable. I did search through ASC and came across this thread/solution (SOLVED ICS M4 firing full auto and bursts on Semi-Auto). His solution was to ensure that the forward assist lever was moving smoothly. I checked and mine is moving smoothly. So, does anybody have any ideas what is causing this problem and a fix?