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Mark 2 1911 Impact Hammer


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#1 Peally

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Posted 15 October 2010 - 12:43 PM

Just tossing this out here, and on the KWA forums. I own a MK2, and roughly since owning it I've had an issue with the gas pin (more specifically the mechanism of parts 75, 34, and 35 AKA the impact hammer assembly AKA the firing pin for the magazine gas release).

Here's a crummy quality photograph looking down at the inner frame, magazine top is in the direction of the line arrow, and faces the solid arrow:

Posted Image

Another view, from the bottom with the thing dangling:

Posted Image

Problem is, that pin is free to rotate upwards, and when the gun is fired, it doesn't project down with enough force on the magazine to release the gas. This mainly tends to be a problem when the slide is racked (bringing the assembly back towards the hammer) and a fresh mag is put in.

Wondering if anyone with the expertise and means to can shoot me either an explanation or some photos of how this assembly should look when working. If I were to solder the piece facing down I'd imagine it might work, but I'd rather not melt/damage anything if I can just get it running correctly. Also, is the spring next to the impact hammer supposed to create tension to keep the I-hammer facing down? It doesn't have any visible function to me.

Please note that I cannot apply for an RMA. I'm over the 45 day warranty limit and there's no way for me to obtain a receipt.

EDIT: I see someone had a similar problem as me a few topics down. My mistake. Although I will say that I believe the firing pin is in the correct spot. The gun WILL fire if I manually field strip the gun and physically move the impact hammer down with my finger. Obviously a bit of a pain though. If anymore pics are needed I'll get on it.

Edited by Peally, 15 October 2010 - 12:49 PM.


#2 MrMonkekekeMan

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Posted 20 October 2010 - 03:36 PM

Luckily this is a simple fix. The problem is this assembly was assembled improperly. Although this is going to be difficult to explain Ill try my best.

1) Now the problem is that the impact hammer is not in front of the sear spring(#78) so just assemble everything except this time make sure the the sear spring is putting pressure on the impact hammer.

thats the best i can explain it. If you dont understand I'll try to explain it differently.

#3 Spiggy

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Posted 20 October 2010 - 03:44 PM

you need to remove the entire leaf spring and reinstall it.


To help, if you remove the slide and have your finger on the impact block, it will be easier to install.

#4 Peally

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Posted 21 October 2010 - 10:11 AM

Thank you very much for the replies. I was getting scared at the lack of them for a bit :). I will try out the suggestions and get back to you!

#5 Peally

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Posted 23 October 2010 - 02:15 PM

Reinstalled the leaf spring again (over everything, correctly I would hope). Same problem.

Will fire when hammer is cocked and impact hammer is retracted:
Posted Image

Will not fire when hammer is cocked and impact hammer is retracted, but angled up due to a bump, jostle, or what have you:
Posted Image

Is the spring adjacent to the IH supposed to create tension on it, or is it just there as a spacer? Like I said, melting it into the downward position may work, but it'd be hefty intentional damage to get it working. Does it fire in the upper position for any of you guys? At a loss as to what solutions or fixes are available here.

#6 Spiggy

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Posted 01 November 2010 - 04:30 PM

looks like part of your impact block went awol.  If you can contact us, we can try to get another for you.  Just contact the help desk.

#7 Peally

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Posted 02 November 2010 - 07:22 PM

Wilco, thanks Spiggy.

#8 Peally

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Posted 09 November 2010 - 11:53 AM

Well, I popped into the help desk, was told to order part PT0112-0060 on the phone.  Unfortunately, swapping it hasn't made a difference. As a side note, I received part 60, the impact pin, as stated in the parts diagram. Confirm that this is what you were referring to by impact block? No biggie if I have to order another part, this one put me back a whopping buck fifty plus shipping. If this was the part intended, then has this problem sufficiently blown anyone's mind yet?

#9 Spiggy

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Posted 10 November 2010 - 11:31 AM

:mellow: I should've specified the part by number, not colloquial label.

The item# is listed as #35 on the MK2 diagram, which is the small part indicated on the picture above

PM KingSize with a copy of this thread's link, He'll see if he take care of sourcing the part for you.  

http://www.kwausa.co...p?showuser=1812

#10 Pillagerr

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Posted 19 June 2012 - 10:36 AM

Your defective Impact Hammer sheared off the nub.  See http://kwausa.com/fo...er&fromsearch=1.  KWA really should manufacture this part from tool steel so this COMMON PROBLEM stops messing with loyal KWA 1911 fans!

#11 VictorNica

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Posted 20 June 2012 - 03:03 PM

We always want to help our customers out so if you have this problem just contact us directly so we can take care of you. We have put a warning label in all 1911s telling users not to dry fire the gun. This is the only situation we have found that breaks the impact block. Under normal use this piece will not break.

#12 xKingSizex

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Posted 21 June 2012 - 08:21 AM

You are also replying to a thread from two years ago. Please start a new thread or hit up our Help Desk so we can solve any issues you may be having with your product.




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