We HK416/SOL/888 Full Auto Keep Firing

Slodin · April 28th, 2016, 21:07

Hi,

I just acquired a We Hk416 as my first GBBR from a trade..owner said he put in a RA-tech trigger box and included the stock trigger box as well..

Semi works fine and crisp..didn't have a chance to go to field chrono yet..I don't have one..

Full auto goes crazy and start fire on it's own after 3 rounds or so...I have to squeeze the trigger again to stop it..

It's not a big deal for me because I only play on semi..however I still want to know and maybe fix it if i can...

br0k3nsa1nt · May 16th, 2016, 07:44

I would check the setup of the trigger assembly. Since it came with two, it's obviously been taken apart. It could be that the trigger mech is sticking, so it continually cycles until you hit the trigger again and it frees up.

localfreerider · May 16th, 2016, 17:13

Cycle the action dry without a magazine and check that the safety works. Switch to semi auto, pull and hold trigger and cycle the bolt back making sure the hammer resets and does not follow the bolt home. Switch to full auto and pull and hold the trigger dropping the hammer, when you cycle the action back the hammer should reset and stay back until the bolt is a few millimeters from closed.

Function test will let you know if you have gremlins in the lock work.

I suspect worn sears in the case of the OEM trigger box causing the runaway or fitment issues in the case of the aftermarket one.

Hope this helps

good luck!

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April 28th, 2016, 21:07	#1
Slodin Trader rating Join Date: Apr 2014 Location: Surrey B.C	We HK416/SOL/888 Full Auto Keep Firing Hi, I just acquired a We Hk416 as my first GBBR from a trade..owner said he put in a RA-tech trigger box and included the stock trigger box as well.. Semi works fine and crisp..didn't have a chance to go to field chrono yet..I don't have one.. Full auto goes crazy and start fire on it's own after 3 rounds or so...I have to squeeze the trigger again to stop it.. It's not a big deal for me because I only play on semi..however I still want to know and maybe fix it if i can... __________________

May 16th, 2016, 07:44	#2
br0k3nsa1nt Trader rating Join Date: May 2010 Location: London, Ontario	I would check the setup of the trigger assembly. Since it came with two, it's obviously been taken apart. It could be that the trigger mech is sticking, so it continually cycles until you hit the trigger again and it frees up. __________________ If it moves, kill it. If it doesn't move, kill it now, It might move later.

May 16th, 2016, 17:13	#3
localfreerider willing to perform services in a dark alley that may or may not leave you satisfied for a title. GFE = 1, looks = 2, BBFS for an extra $50. Trader rating Join Date: Oct 2005 Location: Never gonna let you down	Cycle the action dry without a magazine and check that the safety works. Switch to semi auto, pull and hold trigger and cycle the bolt back making sure the hammer resets and does not follow the bolt home. Switch to full auto and pull and hold the trigger dropping the hammer, when you cycle the action back the hammer should reset and stay back until the bolt is a few millimeters from closed. Function test will let you know if you have gremlins in the lock work. I suspect worn sears in the case of the OEM trigger box causing the runaway or fitment issues in the case of the aftermarket one. Hope this helps good luck!

We HK416/SOL/888 Full Auto Keep Firing

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