Jump to content


Beach's LM416 Upper Tutorial

LM416 HK416

  • Please log in to reply
39 replies to this topic

#21 The Nutty Professor

The Nutty Professor

    Enthusiast

  • Members
  • PipPip
  • 99 posts
  • Gender:Male
  • Location:Savannah Georgia
  • Country:

Posted 01 September 2013 - 03:43 PM

I rather do a build with something with more readily available parts. Meaning WE But which rifle are you using for donor parts?

#22 jet

jet

    Newbie

  • Members
  • Pip
  • 17 posts
  • Gender:Male
  • Location:San Jose CA
  • Country:

Posted 01 September 2013 - 04:31 PM

I used JG, as did Akira and Beach (who pioneered all this).

Beach is the only one to try with a WE. (Unless Akira is lurking and waiting to unleash something on us)

#23 akiraspeedstar

akiraspeedstar

    Guru

  • Members
  • PipPipPipPip
  • 1,130 posts
  • Gender:Male
  • Country:

Posted 01 September 2013 - 05:25 PM

Yeah much thanks to BeachEMT for showing us the possibility of building a HK416 upper for the LM4. I wouldn't have risked purchasing a JG for parts alone to have experimented myself. I had actually attempted a VFC build before but it would've required a good amount of machining which I didn't feel like doing at the time.

As for the WE build, nah I'm done experimenting and what not, just keeping my gun running smooth and playing is all I care about now days.

#24 jet

jet

    Newbie

  • Members
  • Pip
  • 17 posts
  • Gender:Male
  • Location:San Jose CA
  • Country:

Posted 01 September 2013 - 06:56 PM

View PostBeachEMT, on 01 September 2013 - 10:10 AM, said:

Any noticeable gap between the inside of the gas block and the barrel? The reason I was hesitant to use a LM4C barrel or a 1" extension with the LM4 base barrel, was the fact that the profile steps down right after the AR-15 block shelf.

If you are having problems with stock fitting, you could try using a G&P GBB buffer tube. Some modification is required but it will work (the threads need to be sanded down IIRC).

Totally zoned on this Beach sorry.

Yes there was a gap with the gas block and the barrel. I used non-compressible shimming tape to deal with the gap.

As for the VFC stock. It won't fit because the made the rail on the buffer tube narrower. The stock is molded to that width. I assume they did that so the Real Steel guys can't stick HK branded buttstocks on their guns.

I want to keep the KWA buffer tube as it is about the same dimensions as real steel mil-spec buffer tube and gives me the option of running real steel stocks.

#25 BeachEMT

BeachEMT

    Specialist

  • Members
  • PipPipPip
  • 533 posts
  • Gender:Male
  • Location:People's Republic of California
  • Interests:Engineering, Emergency Medicine
  • Country:

Posted 02 September 2013 - 10:45 AM

View Postjet, on 01 September 2013 - 06:56 PM, said:

Yes there was a gap with the gas block and the barrel. I used non-compressible shimming tape to deal with the gap.
Thanks, I kinda figured there would be. Maybe I will fill it in with epoxy or something.

View PostThe Nutty Professor, on 01 September 2013 - 03:43 PM, said:

I rather do a build with something with more readily available parts. Meaning WE But which rifle are you using for donor parts?
JG parts are the easiest to get a hold of (and the cheapest). VFC parts aren't hard to get now that WGC has them all on their website. I'm WE parts because that's what I could get at the time. WE and VFC parts will require a lot of machining to fit the LM4 receiver.

#26 The Nutty Professor

The Nutty Professor

    Enthusiast

  • Members
  • PipPip
  • 99 posts
  • Gender:Male
  • Location:Savannah Georgia
  • Country:

Posted 02 September 2013 - 08:24 PM

No the upper receiver is easy to find. The complete rifle is damn near impossible. The RIS and barrel nut aren't easy either. The RIS you can find but usually for half the price of a complete rifle. The barrel nut FOR GET IT!!!

#27 BeachEMT

BeachEMT

    Specialist

  • Members
  • PipPipPip
  • 533 posts
  • Gender:Male
  • Location:People's Republic of California
  • Interests:Engineering, Emergency Medicine
  • Country:

Posted 03 September 2013 - 10:57 AM

View PostThe Nutty Professor, on 02 September 2013 - 08:24 PM, said:

No the upper receiver is easy to find. The complete rifle is damn near impossible. The RIS and barrel nut aren't easy either. The RIS you can find but usually for half the price of a complete rifle. The barrel nut FOR GET IT!!!
Here you go:
http://www.wgcshop.c...416&catid=&cat=

#28 The Nutty Professor

The Nutty Professor

    Enthusiast

  • Members
  • PipPip
  • 99 posts
  • Gender:Male
  • Location:Savannah Georgia
  • Country:

Posted 03 September 2013 - 08:26 PM

Thank you.

#29 The Nutty Professor

The Nutty Professor

    Enthusiast

  • Members
  • PipPip
  • 99 posts
  • Gender:Male
  • Location:Savannah Georgia
  • Country:

Posted 06 September 2013 - 09:48 PM

I just placed my order. I forgot how annoying WGCShop's ordering system is!!! I plan a bottom up build with this one. Yes I could wait for a company to produce one...But I can't hold my breath that long.

#30 jet

jet

    Newbie

  • Members
  • Pip
  • 17 posts
  • Gender:Male
  • Location:San Jose CA
  • Country:

Posted 07 September 2013 - 12:14 PM

I feel your pain. Almost ordered from WGC as well. I was looking for weeks.
Lucked out and one showed on the local CL. The guy didn't even know what it was.
He just listed it as a "Airsoft Assault rifel". Pretty funny.

Good luck with your build.

#31 The Nutty Professor

The Nutty Professor

    Enthusiast

  • Members
  • PipPip
  • 99 posts
  • Gender:Male
  • Location:Savannah Georgia
  • Country:

Posted 07 September 2013 - 03:23 PM

My area is an airsoft virgin. Two huge military bases and they were still paintball. But it's taking off now since a field opened. The guys prefer the realism and the distance you get with airsoft. One guy has a huge armor of airsoft because it was cheaper haha now he can use them!!! A GBBR 416 will be a sight to see around these parts. Hell my LM4 gave them giggle fits.

#32 BeachEMT

BeachEMT

    Specialist

  • Members
  • PipPipPip
  • 533 posts
  • Gender:Male
  • Location:People's Republic of California
  • Interests:Engineering, Emergency Medicine
  • Country:

Posted 07 September 2013 - 05:57 PM

View PostThe Nutty Professor, on 06 September 2013 - 09:48 PM, said:

Yes I could wait for a company to produce one...But I can't hold my breath that long.
I don't think anyone will be producing a LM4 compatible 416 upper. There isn't that big of a market for LM4 upgrade parts. Also there are copyright issues in the US and EU. It would be great if Umarex would allow KWA to produce US legal HK416 GBBs, but I doubt that will happen.

#33 BeachEMT

BeachEMT

    Specialist

  • Members
  • PipPipPip
  • 533 posts
  • Gender:Male
  • Location:People's Republic of California
  • Interests:Engineering, Emergency Medicine
  • Country:

Posted 22 February 2014 - 06:32 PM

Hey guys, I updated the Mod 1 section with a sneak peak of what I'm working on. Hope y'all enjoy :innocent:

#34 Jeffsworkshop

Jeffsworkshop

    Enthusiast

  • Members
  • PipPip
  • 73 posts
  • Country:

Posted 24 February 2014 - 06:18 AM

That looks awesome Beach! is that going to be a CNC'd part?

#35 BeachEMT

BeachEMT

    Specialist

  • Members
  • PipPipPip
  • 533 posts
  • Gender:Male
  • Location:People's Republic of California
  • Interests:Engineering, Emergency Medicine
  • Country:

Posted 24 February 2014 - 08:45 AM

Yeah that's the plan. Then get the donor upper stripped and the whole thing Cerakoted. Currently I'm finalizing a super skeletonized prototype to be 3D printed. All I need is confirmation of the dimensions of the OEM KWA rail and VFC rail system notch.

#36 Jeffsworkshop

Jeffsworkshop

    Enthusiast

  • Members
  • PipPip
  • 73 posts
  • Country:

Posted 24 February 2014 - 10:26 AM

I was wondering, will you be able to CNC the crevice where the rear hooks into the rail from the bottom? I ask because the original rail had that piece welded on as a separate part, presumably because it was not possible to integrate it in the casting process.

#37 BeachEMT

BeachEMT

    Specialist

  • Members
  • PipPipPip
  • 533 posts
  • Gender:Male
  • Location:People's Republic of California
  • Interests:Engineering, Emergency Medicine
  • Country:

Posted 24 February 2014 - 11:04 AM

Yeah I'm worried about that also. I figured I would put it in the solid model. If the machine shop can't do it, I will adjust the model. They should be able to make a cut. The only concern is how "square" they can make the back corners.

#38 jet

jet

    Newbie

  • Members
  • Pip
  • 17 posts
  • Gender:Male
  • Location:San Jose CA
  • Country:

Posted 05 March 2014 - 01:21 PM

Good to see your still on this Beach. If you end up with a full DIY kit, you could probably move quite a few, since none of the aftermarket manufacturers have done it. Nice job.

#39 BeachEMT

BeachEMT

    Specialist

  • Members
  • PipPipPip
  • 533 posts
  • Gender:Male
  • Location:People's Republic of California
  • Interests:Engineering, Emergency Medicine
  • Country:

Posted 05 March 2014 - 07:41 PM

The only problem with a kit is access to VFC parts. I have a source of WE parts but it takes a long time to get them imported and WE parts seem to be slightly out of spec. VFC spec rails should fit WE receivers but WE rails probably won't fit VFC spec receivers. I unfortunately haven't been able to confirm that yet. If anyone has a VFC Hk416, I would really appreciate it if you could PM me the dimensions of the nub that locks the rails to the upper.

#40 BeachEMT

BeachEMT

    Specialist

  • Members
  • PipPipPip
  • 533 posts
  • Gender:Male
  • Location:People's Republic of California
  • Interests:Engineering, Emergency Medicine
  • Country:

Posted 14 April 2014 - 12:18 AM

Barrel cover is on the Mod 0, all that's left is to JB Weld the top rail and paint the whole thing. Any suggestions for color/pattern?
Posted Image

The 3D print prototype top rail has come in:
Posted Image

Posted Image

Posted Image

I need to make a couple tweaks. It sits about 0.5mm too far back and 0.5mm too high.I know what's preventing it from sliding all the way forward, but I still need to figure out the vertical issue.

Lastly, I've been considering a "Mod 2" which would have a completely custom one piece upper. I'm trying to decide if I should make it an exact clone of the RS or do my own style that's compatible with all the 416 components. In case there's an opportunity to get a small run of them made, what would people prefer?

Edited by BeachEMT, 14 April 2014 - 12:21 AM.






Also tagged with one or more of these keywords: LM416, HK416

1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users