My Experience with common SP5K mods
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Thread: My Experience with common SP5K mods

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    Default My Experience with common SP5K mods

    Hey folks:

    this site has been quite helpful as I was trying to navigate my way through making some or the more common modifications to an SP5K. Since I'm relatively new to firearms, there was a bit of learning curve. Hence, I wanted to give back to the site by posting a some of what i learned for other folks that might be looking to modify their SP5K.

    So, first, here's the pic my SP5K nowadays. My Experience with common SP5K mods-sp5k-mods.jpg

    Three mods:

    1. changed out standard upper rail with MFI ultra low profile mount from HK parts. Quite a nice little piece of hardware and excellent customer support from the manufacturer, MFI. Note that HK parts website says it will fit RMR style red dots, but the mount was made specifically for Aimpoint T1/T2 or H1/H2. My experience was that it did, in fact, work way better with the the aimpoint product. the dot is still low enough to have a 1/4 co-witness. A trijicon RMR did not co-witness and you have to buy a special mount (the newer "quick release" version) for it to fit the rail at all. the Aimpoint H1/H2 came with a mount that fit the rail out of the box. My understanding is that the T1/T2 comes with a slightly different mount, so you'd have to buy separately the same kind of mount that the H1/H2 has. So, great product - just you will probably want to heed the manufacturer's advice and go with the Aimpoint optic.

    2. Paddle release kit from HK parts. Really cool once you get it installed, but was a real pain to get installed. Granted, I am no gunsmith so it would surely be less challenging for someone who is more experienced. I get along well with the folks at the LGS so they just offered to do it for me for if I bought them lunch - I took them up on the offer! They said it was a pain after they got done and they have way better tools than I do. the gunsmith at the LGS remarked that the special needle nose pliers that HK parts sells did make the job way easier.

    3. sight tower rail, also from HK parts. Also, pretty cool once you get it installed. My experience with this was that it need to be fitted to the gun (i.e., filed down) for it to be straight. Again, LGS to the rescue: they did it for $20, which i think was a great deal considering this was also proving a real pain out of the box. I've heard some folks have luck with this part out of the box and others have to fit it. I'm guessing this mount is not a high volume item, so the parameters of where the screw holes are may not be entirely consistent from batch to batch. On mine, it seemed the hole was fraction of an inch over from where it need to be to fit out of the box.

    Hope that helps,
    Shayne

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    Thanks for the report! I am debating having an smith install a paddle mag release as well. I'd prefer not scratch or scuff something up.

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    I installed the paddle kit myself. Took about 15 mins after watching a video on YouTube. Took some working it back and forth with oil to get it smooth but broke in very well. Nice addition. Now if only my Form 1 would hurry home!!

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    Quote Originally Posted by Indreams84 View Post
    Thanks for the report! I am debating having an smith install a paddle mag release as well. I'd prefer not scratch or scuff something up.
    The best option is to have a gunsmith install it at the same time they install a 3 lug barrel and do your sbr markings.

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    Quote Originally Posted by Indreams84 View Post
    Thanks for the report! I am debating having an smith install a paddle mag release as well. I'd prefer not scratch or scuff something up.
    Yes, similarly, my concern was that the tools I had for removing the pin from the button release were not adequate and I'd end up damaging something. totally worth having an expert at the LGS do it. They let me watch so I could learn something too : D

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    The HKParts SP5K paddle mag release is nearly a tool-less install. It took me maybe 20 min's, and that is mostly due to my fat fingers (makes texting hell too). I will say, I wish the video tutorials were a bit more detailed, but if I can figure it out, anyone can.

    This is not the case with the SP89 and other SP89 clones, the drop in kit from HKParts only works with the SP5K. The mag release on the SP5K is slightly different from the MP5 and the SP89. I think this was an intentional collaboration between HK-USA and HKParts, but I can not back that up with any insider knowledge?

    Seriously, you guys can do it. needle nose pliers (full disclosure, I did buy the HKParts trigger return spring pliers, they were handy).
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    I love my paddle mag kit from HKparts, but mine did not drop in. I had to take several thousandths off of one side of the plunger to get it to fit. I did that by chucking it in my drill press and sanding it down. After that getting it to install without any special tools was not tough.

    A note on optics, my bushnell TR25 red dot co-witnesses perfect with that mount.
    Forget the fancy colors, short slide, long slide, and optics cut, I just want a VP9 with a darn mag release button!

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    I need to take a pic or two of mine. I really like the RMR mount I'm using, keeps the RMR super low to the gun.

  10. #9
    HMP
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    So the paddle release on a sp5k is something any of us could do at home? Doesnt require any drilling or anything?

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    Quote Originally Posted by HMP View Post
    So the paddle release on a sp5k is something any of us could do at home? Doesnt require any drilling or anything?
    Absolutely! Complete drop in kit. No mods needed.

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