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Old March 25th, 2018, 10:15 AM #111
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Quote:
Originally Posted by SwerveAM View Post
How difficult is it to change a barrel?
Similar to AK if you've ever done it. Press out cross pin, press out bbl, press in new bbl to proper headspacing (this is the fiddly part), drill and press cross pin in (this likely needs a jig to prevent egging out holes in the trunnion)

Not sure this has been brought up: There is a HK 3-lug flash hider you could weld to get about another inch. Wouldn't look silly (but couldn't use a suppressor either.) Might get you over 29" w/ other stock solutions that are close but no cigar? You wouldn't actually have to weld to the bbl. Just weld the latch closed. Would be easy to remove w/ a grinder if you ever permanently left MD w/o doing any damage to the bbl.
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Old March 26th, 2018, 02:02 AM #112
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Originally Posted by cap6888 View Post
Personally, I would be hesitant to use a brace that uses a standard milspec receiver. Itís easy to argue that the brave could easily be removed and replaced with a stock. Just my opinion though.
Your point is moot unless he has a stock on hand and readily available to be installed on said MP5.

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Old March 27th, 2018, 08:14 AM #113
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Quote:
Originally Posted by smdub View Post
Similar to AK if you've ever done it. Press out cross pin, press out bbl, press in new bbl to proper headspacing (this is the fiddly part), drill and press cross pin in (this likely needs a jig to prevent egging out holes in the trunnion)

Not sure this has been brought up: There is a HK 3-lug flash hider you could weld to get about another inch. Wouldn't look silly (but couldn't use a suppressor either.) Might get you over 29" w/ other stock solutions that are close but no cigar? You wouldn't actually have to weld to the bbl. Just weld the latch closed. Would be easy to remove w/ a grinder if you ever permanently left MD w/o doing any damage to the bbl.
Never done AK before but thank you very much for the reply and walkthrough. Sounds like I might have to sell before moving...
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Old April 27th, 2018, 11:09 AM #114
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This is a lot of fun to shoot and measures 26.5" to the 3-lug. I could install a VFG and fall into the legal firearm category. An SBR is preferable but at this point $200 is better spent elsewhere.

I like this full size so much I am considering selling the Z-5P. This AT94P is super smooth and, knock on wood, has eaten the flat point point ammo from KCI/ATI mags without any hiccups.

Currently running through 135gr HP subsonics from LAX Ammo.

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Old April 27th, 2018, 12:51 PM #115
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Quote:
Originally Posted by rayrevolver View Post
This is a lot of fun to shoot and measures 26.5" to the 3-lug. I could install a VFG and fall into the legal firearm category. An SBR is preferable but at this point $200 is better spent elsewhere.

I like this full size so much I am considering selling the Z-5P. This AT94P is super smooth and, knock on wood, has eaten the flat point point ammo from KCI/ATI mags without any hiccups.

Currently running through 135gr HP subsonics from LAX Ammo.

what brace is that?
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Old April 27th, 2018, 08:09 PM #116
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Originally Posted by danb View Post
what brace is that?
POF A3 stock + 3D printed round thing from internet + tailhook

Add in some cutting and drilling! I bought the 3D part from this guy:
https://www.youtube.com/watch?v=v91Tww7vVFc&t=21s
flood@farrow.tech

I bought the POF and tailhook used, so it wasn't too bad.


https://techsmithmfg.com/
This a company that is making adapters as well as modifying stocks BUT they require the "F" stock, which is 4 position and much more money than a POF. But man, this Techsmith outfit is killing it with their stuff. Lots of adapters for a bunch of the PCCs.
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Old September 26th, 2018, 12:47 PM #117
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MP5 29 Inches

So I read everything I could find on other's attempts to modify the collapsible stock to get it long enough for a 29 inch length.

I could only think of one thing that I have not read before. The HK33 collapsible stock is supposed to have a longer LOP and could be used to attach to the MP5 collapsible stock by swapping out the forks. I asked Gatewood Supply to measure the fork length and they are the same as the F stock. The longer LOP just puts it to ruffly the same size as the F stock when extended.

I couldn't find a way to get out to 29 inches with a collapsible stock. I ended up going the muzzle route. I had the SilencerCo ASR 9mm flash hider pinned and welded. It's a little over 29.25 inches and it still can be shot suppressed.

SilencerCo has the Omega 9 and the Hybrid that can be used with the ASR 9mm mount.
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Old October 28th, 2018, 12:02 AM #118
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Quote:
Originally Posted by dontpanic View Post
29.5"
Shoulder thing that goes up
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Originally Posted by Slim View Post
Schnejerator has a point about the metal. Iíve never handled an MPX, but in photos it looks much more robust than the MP5 one.

I never thought of a Shoulder Thing That Goes Up! (STTGU?) Looks like the wire shoulder rest on the M240/M249 stock. Very clever!

Right after I posted, I ordered an A2 stock and was thinking Iíd do a fixed (read low-tech, low-skill) version of schnejeratorís extension to keep it legal in MD. Now I kinda wish Iíd just ordred the A3 stock to try the dontpanic STTGU. Maybe I'll try the shoulder rest loop on the A2. When it gets here I'll decide which one I want to try.
Finally got around to tracking down one of these:

M249 shoulder rest, aka STTGU.

Iím going to drill 1 or 2 holes laterally in the buttpad of my A2 stock. Iím guessing offset sideís in separate holes will make it lock in the up and stowed positions.
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Old October 28th, 2018, 01:14 AM #119
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Originally Posted by fred333 View Post
Does the HK MP5A3 Collapsible Stock Meet Minimum 29" OAL Requirement? If not, is there another collapsible or fold-able stock that fits the MP5A3 that does?

I still think there's money to be made for someone to make an inflatable buttpad (for more comfortable shooting while adding 6 or so inches to LOP:innocent: ).

So funny that the ATF loses their shirt over what constitutes a permanently attached flashhider when determining OAL, but nobody cares about the buttpad held in place with 2 screws at the other end. Then again, someone would probably write letters to the ATF asking for clarification until they said no...
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Old October 28th, 2018, 01:26 AM #120
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Quote:
Originally Posted by Slim View Post
Finally got around to tracking down one of these:

M249 shoulder rest, aka STTGU.

Iím going to drill 1 or 2 holes laterally in the buttpad of my A2 stock. Iím guessing offset sideís in separate holes will make it lock in the up and stowed positions.
It's pretty easy. I even bent my own sttgu out of 3/16" round stock. I used another puece of it as the stop in the up position and black domed screw covers to hold it in the down position.

Good luck
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