KK-MPi-69 builds
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Thread: KK-MPi-69 builds

  1. #1
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    KK-MPi-69 builds

    15 plus years ago I purchased a KK-MPi-69 22lr training rifle kit from AWO

    Kit # 1, it was complete except for the receiver. I knew I was going to do a big build one day, so I held off riveting it together, glad I did. I needed the complete undamaged magazine guide for spec's. Several years back I purchased a demiled barrel w/ trunnion on e-bay, attached by wire was a damaged magazine guide, but salvagable now I had two (2) Magazine guides.
    The magazine guides are elusive, many were destroyed in the demilling process. I attempted to reproduce one, but It did not come out nice, so I kept Kit #1 together with electrical nuts and bolts, put the spare parts away

    the electric nuts and bolts are similar in diameter to long rivets need to finish the kit. I currently utilizing the nuts and bolts for this build session. in between Kit 1 & 2 one of the fellow members at weaponsguild e-mailed me regarding the 22lr barrel sell off numrich had, so I bought the 10- barrel package, there were several barrels that could be converted and modified to fit the trunnion, I also put those away for the future

    kit #2 started out as extra parts from AA-OK, desert fox and numrich, odd parts for sale on the numerous gun sites. Last winter, I got my e-mail from Apex - low and behold they had complete front ends, having the parts to immediately get her shooting, I fitted the parts and off to the range!! those suhl barrels are very accurate.

    hand made magazine blocks need to be made, so I orders some bar steel the same thickness as the original or I should same very close. I took one of the original magazine guides and used it for a template. I I do all my work with hand tools when possible. I made three out of bar steel cut to the same width the length. started out with a hack saw and power saw to finalize. then I drill pressed out the inside of the magazine guides then I drilled the rivet support hole and the bolt stop hole and then the ejector slot. the last thing is to weld or braze the small bullet guide

    rifle # 3
    now I have two complete rifles to work with, I wanted to wait to see if a third ( 3rd) rifle was possible. I had the internal parts, extra stocks, handguards, two MPi-69 trunnions. So I spent most of my limited free time turning down the barrel exterior to fit the trunnion and add the cover piece that surrounds the barrel, I fabricated two shields out of round tubing, sleeved the chamber end.
    that resolved the barrel issue. The modified barrels & receivers will be rust blued utilizing Mt Laurel

    Rifle # 4??????
    I have a trunnion , barrel and magazine guide, stock set, I have several posts requesting parts yes i can buy what I need, from the three source but i wanted to help out fellow members but cleaning out there un-used parts to finish my projects

    The receivers come from different vendors cope's polish blank, a turbothis blank, and a Bent U blank, my magazines come from that cleaview investment or CTD they had a sale on the mags many many moons ago $ 9 a magazine so I bought 20 and the bought ten mag pouches from clearview, they were dirty so i washed then in warm water and soap , washed by hand with scrub brush they were like $ 2 a pouch

    there is another reason I have not started riveting these kits. I am going to sell the first kit and maybe the second kit. i will start riveting kit #3 once I have test fired it. Im in the process of drilling out the FCG holes


    if you have any spare parts to contribute please feel free to drop me a PM we can talk, maybe get Rifle # 4 up and going

    Thanks
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  2. #2
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    ok I posted a few additional pictures

    I got a comment from a non builder regarding the "screw build" its not screw build. the screws are actually nuts and bolts. they hold the rifle together for fitting and testing, all the rivet holes on the MPi-69 are the same diameter and length ( close) there s no tapping of the holes, the screws fit inside snug. The final builds will have rivets and will be rust blued
    shame he was more concerned about attacking me that learning
    it has been my practice never to show finished builds or gallery pictures for the final projects
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    Sprat- Gunco, Weaponsguild, all sig forums, K-98k forum
    Jacksprat - ar-15 forums
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  3. #3
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    Hi, nice work it's challenging enough to build one let alone four..

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  5. #4
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    wildcat thank you. its been a culmination of 15 plus years accumulating the parts from different and now non existing companies here and abroad

    below is a reply to several questions I received on another site revolving around the hand made mag guides

    yes both of the hand made mag guides have the bolt stop hole drilled and I have the factory parts. also I just purchased a turbothis MPI-69 receiver, it has the hole for the detent. I have never used it or installed in my original mag guide. . I will install it in the rifles I finalize. I have never built a full auto version, not planning on that

    my range has been closed for the past 3 weeks, so I can not test the guides out. I did find that while function testing in the shop, that the bolt kicks out the empty case without the ejector and feeds without the ramp build into the mag guide. I am curious

    also I have a 5th barrel set up, I will be starting in a few weeks, I will photograph that process for those with kits and no barrels

    I also found that there are variations of magazines. oh on that subject, I have found some mags are working some are not. I will also testing mags,.

    more to come
    scottyb likes this.
    Sprat- Gunco, Weaponsguild, all sig forums, K-98k forum
    Jacksprat - ar-15 forums
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  6. #5
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    well the range opened today, so off I went with rifle # 1 the original kit as a test bed and Rifle # 3, the kit with the re configured barrel and the homemade mag guide

    this range testing was two fold
    1) to see if the mag guide feed and ejected with the ramp and if the ejector was absolutely required
    2) weed out more bad mags with rifle #1

    so regarding the first order of business, the rifle did feed without the feeding ramp with a 1 in 10 rounds not feeding.
    the conclusion is yes you need a feeding ramp, so I will be brazing / forming the ramps to the mag guide plates. but it did work

    now ejection yes I got ejection of fired cases without the ejector installed, I would say 4 out of 10 ejected with out the ejector. so yes I will be making ejectors. someone sent me a PM a while back and asked if I could use a Sig 228 ejector, while they look similar I would say NO!!!
    I will probably use some scrap ak receiver pieces to form and heat treat the metal ejector photo's of that when I start that process

    second the testing the mags, I found another mag that did not feed right. check them out at a much later date

    next I will be turning down another barrel and add the chamber face area for rifle # 4

    more to come
    Sprat- Gunco, Weaponsguild, all sig forums, K-98k forum
    Jacksprat - ar-15 forums
    Capt jack - gunboards

 

 

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