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Posted: 2/15/2016 8:41:57 PM EST
Are there any easily convertible 9mm mag blocks still in production? I'm looking for something I can pack in my range bag and swap my 223/556 over to 9mm quickly without having to punch out the bolt catch each time. Just pop on a new upper and slip in the block without the need for a hammer and punch. The VM HY Tech block seemed to fit the bill, but it seems like the production of them has been "discontinued" at the stores I've found.
Link Posted: 2/15/2016 9:23:33 PM EST
Hahn top loading block. Just slides in from the top when you need it and right back out when you don't. Only sacrifice is no bolt hold open.
Link Posted: 2/16/2016 3:38:07 PM EST
RRA is supposed to be like that. slides in from the bottom and has an allen wrench to tighten into place.

I managed to pick up a used spikes block that tightened in front and back.
Link Posted: 2/17/2016 10:55:28 AM EST
I've got a Hahn non-dedicated top loader, it's plug n play, just drops right in from the top. But I only run Metalform mags so can't say it will run reliably with anything else, since there's no up n down adjustment. And no LRHO.

Never used a bottom loader but every one I've seen has some up n down leeway so I wouldn't consider that a 'quick swap' unless you could quickly & relaibly re mount it at the same height every time. And you'd still need a tool to unscrew it.
Link Posted: 2/17/2016 9:45:02 PM EST
Link Posted: 2/17/2016 10:02:45 PM EST
[Last Edit: 2/17/2016 10:03:52 PM EST by SBR7_11]
As a 30yr Uzi owner come this March 16th,, I have Uzi mags galore, and this is how I roll to this day,, hard pressed to make me convert,, plain old Uzi mags



Link Posted: 2/18/2016 6:40:33 AM EST
I could remove and replace my Spikes block at the range. Have a dedicated build though, so no need. Might take some fiddling to get right, but IIRC, I eyeballed it the first time and it's been working ever since.
Link Posted: 2/18/2016 7:27:29 AM EST
I have a bottom load rra it goes in and out really easy and locks in with a post locking mechanism that only requires a lot Allen key. Takes about 30 seconds to set up. I haven't shot it yet but it hand cycles pretty well in random positions plan on test fire this weekend will report back
Link Posted: 2/23/2016 6:47:06 PM EST
I bought a used hahn dedicated block, butchered the he'll out of it, made it a top loading. I over did it and now it doesn't have bolt hold open. It's an option.
Link Posted: 2/23/2016 11:03:30 PM EST
What were these called and who actually made them? I don't think I've ever seen one for sale....

Discussion ForumsJump to Quoted PostQuote History
Originally Posted By SBR7_11:
As a 30yr Uzi owner come this March 16th,, I have Uzi mags galore, and this is how I roll to this day,, hard pressed to make me convert,, plain old Uzi mags

<a href="http://smg.photobucket.com/user/capttoyota/media/AR-15%20misc/PICT0194.jpg.html" target="_blank">http://img.photobucket.com/albums/v504/capttoyota/AR-15%20misc/PICT0194.jpg</a>

<a href="http://smg.photobucket.com/user/capttoyota/media/AR-15%20misc/PICT0195.jpg.html" target="_blank">http://img.photobucket.com/albums/v504/capttoyota/AR-15%20misc/PICT0195.jpg</a>
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Link Posted: 2/24/2016 8:03:40 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By getchasum:
What were these called and who actually made them? I don't think I've ever seen one for sale....


View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By getchasum:
What were these called and who actually made them? I don't think I've ever seen one for sale....

Originally Posted By SBR7_11:
As a 30yr Uzi owner come this March 16th,, I have Uzi mags galore, and this is how I roll to this day,, hard pressed to make me convert,, plain old Uzi mags

<a href="http://smg.photobucket.com/user/capttoyota/media/AR-15%20misc/PICT0194.jpg.html" target="_blank">http://img.photobucket.com/albums/v504/capttoyota/AR-15%20misc/PICT0194.jpg</a>

<a href="http://smg.photobucket.com/user/capttoyota/media/AR-15%20misc/PICT0195.jpg.html" target="_blank">http://img.photobucket.com/albums/v504/capttoyota/AR-15%20misc/PICT0195.jpg</a>



They are discussed here:
http://www.ar15.com/forums/t_3_15/166968_VM_Hy_Tech___repairs_fitting____My_PICS_repaired_9_29_2008.html

They come up for sale occasionally. Generally about $250 last I looked.
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