[hkshooterusp]

Picked up a used but nice MKE trigger pack. Made an observation and decided to do some searching of the forums for an answer to my question. Didn't come across one so here goes.

The remnants of the auto sear in the pack rub against the neutered hammer and cause it to drag. The hammer feels sluggish and I don't like it. Is there any inherent problems with removing the vestigial part and replacing with a semi type bushing?
I can't think of any but thought I'd ask the hive before going to the hassle of pulling it apart.

TIA.

 

[hkshooterusp]

Interesting. Especially the take up and over travel adjustment. Would like to see/hear how you did this as improvements here will completely change how a trigger feels.
This pack is different to me because I've only worked on "traditional" modified semi packs, never auto packs. So the auto spring being original design and the pin hole being in the original location has me looking at a new learning curve. I'm chicken to mod the spring, a few years ago I tried to bend an auto spring into a semi configuration and the thing broke much easier than I figured it would. Since then I've only purchased semi only springs instead of making my own. Haven't even tweaked one for pull improvement.
I've read that RTG Parts has a semi spring without the roller that improves the pull but I've never seen or worked with one and doubt it will work in the MKE pack since it's a semi only spring.
Thanks for taking the time to post here, I appreciate it.

 

[hkshooterusp]

Dont drop an MKE or POF pack into an SEF housing. If you move the selector to F, THE PACK WILL CAUSE THE GUN TO SLAM FIRE!!! The Turks failed to relocate the trigger stop pin to the proper semi-only position. I have heard that this has been corrected on the newer imports however I have not verified.

Thanks for speaking up, Joe. Good info. But you said Turks and mentioned POF. Did POF make the same error as the Turks then?

 

[hkshooterusp]

I forgot about this! It's bewildering that the ATF let this go when they have set a previous precedent for roller-lock semi-auto packs.




Yep, POF did (did not) the same.

Ok, cool.

I just checked my MKE pack and the trigger won't over travel and allow the rifle to slam fire. With the selector completely removed even. There's a big round block welded to the frame that stops the tail.
Have no idea how old or new this pack is, I got it used from the market place. But now after some thought I need to check my POF pack.


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[hkshooterusp]

And just checked my POF pack, just as you said, it will slam fire in an SEF housing with the selector in F. Bastards.

And I confirmed the MKE pack will not fit the POF housing without mods. The POF housing has a block welded in the front that won't allow an unmodified auto pack to fit and consequently the MKE pack with the auto sear pin in the original location won't fit either.
Now I have to decide if I want to mod the POF housing so it will accept the MKE pack so I can use the steel housing, or if I want to modify the MKE plastic housing to fit the rifle. Yeah, the hole for the shelf is too small in the MKE housing.
My goal was to replace the POF pack with a better quality and smoother operating pack but these bastardized parts aren't playing nice.


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[hkshooterusp]

Fitted the MKE pack and housing to the POF today. Yeah, fitted.
The hole in the front of the housing only needed lowered and opened a bit to fit the POF shelf. Took less than five minutes. The kicker came when I installed the pack and test fit the unit to the receiver. The pack fit up against the tabs on the receiver opening way too tightly. It took big pressure to even consider getting the unit pressed up against the receiver tight enough to install the butt stock, forget the pin.
After careful consideration I let the old but true mantra of "always modify the cheapest part" dictate my next move. Since this is a Turk pack and there are thousands of them out there, I decided to mod the pack frame vs filing on the receiver tabs.
Using a file I put about a .020 step in the pack frame when the tabs up front meet the frame and touched up the frame where the rear tabs meet with just a skimming, probably less than .010. Test fitting the unit to the receiver saw that with very minor pressure everything fit up nice and tight and the stock went on without trouble. Sweet!
It was now that I decided to message the rear stock pin hole a little. It had been somewhat bothersome to get in and out since the tube in the receiver is crooked just a few thou. A couple of minutes with a rat tail file and some polishing and the pin slips in and out nearly as easy as on an HK receiver.
After assembling the pack with my German ejector the pistol went back together like an HK should. A couple of loaded mags accompanied me and the gun to the back yard where the gun ran perfectly. Ejection was even better than with the doctored POF pack with HK ejector and ejection was distant and very consistent.
As seemingly crude as the MKE units can be sometimes, this trigger pack, even with it's left over auto parts, is an improvement over the POF piece that my gun came with. I like it and the plastic housing is a bit more comfortable on my middle finger where the trigger guard hits than the metal housing.
The gun is about to the point where I'm ready to refinish it now that all the fuss is done. Refinish. Reload. Enjoy.

 

[hkshooterusp]

Glad to hear you got it running!

FYI, that pack is from a 2015 MKE, one of the recently imported ones.

Thanks!
Good to know about the make and it kind of confirms Joe's thoughts that later packs had the trigger stop corrected. We now know that sometime is 2015 the Turks fixed the error of in the trigger pack.