My attempt at the SP5K Magwell Stop block removal
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Thread: My attempt at the SP5K Magwell Stop block removal

  1. #1
    PJT
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    Default My attempt at the SP5K Magwell Stop block removal

    First of all, all glory and honor go to his Majesty, forum member HKBlackham. Without his incredibly amazing tutorial in the Reference Library, showing his attempt to remove the now infamous 2019 SP5K magwell stop block, I never would have had the cahones to take a cutting wheel to my brand new $2500 SP5K in order to install a paddle mag release, as it should have come from the factory. . .

    Per HKBlackham’s instructions, I assembled the required tools needed. I supplemented his list by swapping out the Dremel cutting wheel for Dremels 9901 Tungsten Carbide Cutter. I also included red and blue tape, both for motivation, and to make sure my live rounds and blanks were clearly marked. I fast forwarded to the exact moment when John McClane realized that his MP5 was shooting blanks, and then started cutting.

    My attempt at the SP5K Magwell Stop block removal-0562039a-598d-4906-9f28-e8d0232ac861.jpeg
    My attempt at the SP5K Magwell Stop block removal-fd113d81-a7b2-4696-ac2f-910d540c7d02.jpeg
    My attempt at the SP5K Magwell Stop block removal-0258fff1-dcb9-4c93-850b-0d6403a7bc4e.jpeg
    My attempt at the SP5K Magwell Stop block removal-b9734126-47fd-436f-a269-c6d7d299eb96.jpeg
    My attempt at the SP5K Magwell Stop block removal-a7f8c8b1-f843-441e-97f6-b622c20abe00.jpeg
    My attempt at the SP5K Magwell Stop block removal-8b61c48e-46a6-403f-af29-0d93b65d59b9.jpeg

    It is at this point, with tiny shards of metal digging into your hands, that you WILL second guess yourself. I recommend planning ahead and having the appropriate resources already pulled up and ready if needed:

    My attempt at the SP5K Magwell Stop block removal-a0f1b917-057a-48a7-ad1d-9d9ab23a38ce.jpeg

    As you continue to cut into your $2500 baby, I would recommend stopping regularly to let things cool down, and to vacuum up the metal shavings as you go. Most guys will use their trusty shop vac, but mine was ALL THE WAY out in the garage. Too far. However the wife’s Hoover was just in the next room. How fortuitous . . .

    My attempt at the SP5K Magwell Stop block removal-6a3899b6-df70-4b53-89de-43c83b2ae8cb.jpeg

    Half way through- Slowly but surely we are getting there. Nice thing about the Carbide cutter, is that it is much easier to manipulate, less chance of it getting away from you and effing the magwell up:

    My attempt at the SP5K Magwell Stop block removal-32ca772e-68ae-4178-a221-8626e83716b4.jpeg
    My attempt at the SP5K Magwell Stop block removal-6311ce63-7bca-4a16-8384-c6d051029bfd.jpeg
    My attempt at the SP5K Magwell Stop block removal-37244aa3-6fe7-413d-8bb4-7048e687eaba.jpeg

    MAJOR PROBLEM- I COULD NOT GET BLOCK TO ROTATE! Tried all manner of tools, and I could not get it to turn. This got me worried, so I just kept cutting. Finally, success ( or so I thought) one side popped out!

    My attempt at the SP5K Magwell Stop block removal-4e5374d2-c4e3-4db1-9c69-03170a26c8a9.jpeg

    However, the other side WOULD. NOT. BUDGE. Stuck in there. Tried screwdrivers, pliers, wife’s eyelash curler. I started to worry that maybe HK had read HKBlackhams post, and responded by welding the block in, as a final “We are German and We hate you” move.

    Well, just like we beat Germany in back in WW2, American ingenuity once again beat out German engineering. I could not get my needle nose plies to fit, and so after scrounging around, I found a tiny zip tie, in a Streamlight weapon light box. I was able to attach it to the offending piece and tighten it down. I then yanked on the zip tie like we all wish we could have done to Hitlers mustache, and FINALLY it popped out!

    My attempt at the SP5K Magwell Stop block removal-4a8547fb-77b2-4ac2-931a-3296f9310a7e.jpeg
    My attempt at the SP5K Magwell Stop block removal-c885d661-354e-4a44-8263-7ad585547687.jpeg

    After saluting the American flag while shotgunning a celebratory beer delivered by a bald eagle, I cleaned up and installed the drop in paddle mag release. Then per HKBlackhams instructions, I mailed the now new and improved mag block back to HK, with its specially assigned RMA#. Last pic is proof that a BK dated SP5K CAN have a paddle mag release installed , contrary to all the German hate. . .

    My attempt at the SP5K Magwell Stop block removal-539217d5-0126-40ea-9427-c68b35c25e93.jpeg
    My attempt at the SP5K Magwell Stop block removal-069f6415-51d3-436d-a80b-5e53ffdad884.jpeg
    Last edited by PJT; 08-19-2019 at 02:16 PM.
    Brad4065, gt40doc, brn2xl and 11 others like this.

  2. #2
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    Hilarious man! Good for you!
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    SWEEEET!

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    Excellent story and great work. MacGuyver would be proud.
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    Interesting. But what does this do? Help? Allow a paddle mag release ?

  7. #6
    PJT
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    Yeah. It was bad enough that the SP5K didn’t come with a paddle mag release to begin with. Up until now it was an easy fix, by buying and installing HKParts drop in paddle mag release kit. So sometime beginning in 2019, without telling anyone, HK (and by association all Germans everywhere) decided to start adding a block of metal there, which as you can see, is a bit of a pain to get out.

    The full irony of this whole situation is that I am left handed. Don’t tell anyone, our little secret, but I actually find the original button still easier and faster to manipulate. . . . I mean, if a paddle mag release was better/faster, we would all have them on our AR’s, right? :-)
    LCSO264 likes this.

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    Fantastic! One more point on the score board for us americans, thanks man! Im loving that RMA number my friend hahaha!
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    Great write up!

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    Nice with ice. Cool!!!
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    If someone actually returns the removed offending pieces I'd find that the funniest HK related thing to happen. Ever.
    I don't "run" my guns or "run" anything on them. Likewise, none of my guns are "platforms". I hold them up, not the other way around.

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