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Posted: 4/23/2004 8:22:23 AM EDT
[#1]
There customer service is great.
I sent my mag block in to be replaced and they had me a new one at my door within a week. With this new mag block, I did not have to do any filing, all my Uzi star mags fit perfectly. |
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Posted: 6/11/2004 7:27:48 AM EDT
[#2]
Tagged
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Posted: 8/1/2004 8:59:47 PM EDT
[#3]
Has anyone else tried one of these mag blocks? Just wondering what the current production blocks work with for mags...
Spooky |
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Posted: 8/1/2004 10:24:51 PM EDT
[#4]
Just Uzi IMI star mags.
Last gun show I took the block with me to make sure the mags fit that I bought. |
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OH, USA
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Posted: 8/2/2004 12:49:30 PM EDT
[Last Edit: SBR7_11]
[#5]
The block works as intended..... for use with the std "Mil-spec" mags with the folded seam down the rear. If you intend to use the "commercial "IMI" mags, then you need to do a little filing to the rear corners to allow the deeper comercial mags to insert. EDIT----> "POOR" spelling habits. |
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Posted: 9/4/2004 8:27:15 PM EDT
[#6]
Guess I should reply - I got a mag block and 10 mags from DSA for $80 - all but one fit perfectly... The last one was very, very tight - now I need to find some 35 rounders...
Spooky |
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Posted: 9/5/2004 12:44:09 AM EDT
[#7]
I use the 40 rd SA mags from Vector. no problems here.
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Posted: 9/15/2004 3:32:18 PM EDT
[Last Edit: Tanker06]
[#8]
Looking to get a 9mm AR - who makes the uppers that will work with the Hy-Tech mag blocks?
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Posted: 9/15/2004 3:52:13 PM EDT
[#9]
Hy-tech block is designed for the colt system (feed ramps on block) so any RRA, Colt setup will work.
Oly will not work. |
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Posted: 9/25/2004 4:48:17 AM EDT
[#10]
Do they (VM Hy-Tech) intend to add that mod to the production line? I don't want to have to do any mods to the adapter.The seling point is that you don't have to notch the mags. Otherwise, I may as well keep my $$$ and current mag block, and just keep notching the mags. |
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TN, USA
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Posted: 9/28/2004 10:04:52 PM EDT
[#11]
I have six 32 round magazines that would not fit in the Hy-Tech mag block adapter. None of them could have been inserted more than 1/2 an inch into the block. To fix the problem, I slowly squeezed each one in a table vice. Now, all six mags slide in and out easily. Function of magazine is not affected in any way and visually I cannot tell that it was even done. Of course, they still work perfectly in my Uzi too. If you try this, remove the follower and spring. Take your time and go slow and continually test for fit. Don't squeeze too much - take it slow! It's a great alternative if you don't want to file the inside of the mag block.
Dan |
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NY, USA
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Posted: 10/23/2004 5:05:28 PM EDT
[#12]
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Posted: 11/26/2004 1:13:13 PM EDT
[#13]
Definitely interested in hearing the answer to this one. Since Im in the process of building a 9mm AR and I plan to use this block. I just bought a few mags and some of them are 32rdr's, I'm wondering if they'll work. |
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Posted: 12/2/2004 11:27:34 AM EDT
[#14]
What about the "Fabric Militar" 40rd ones made made in Argentina that Vector is selling now? Are these the same? Will they work? |
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AL, USA
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Posted: 1/11/2005 4:32:47 PM EDT
[#15]
has anyone had problems with the 25rd star IMI mags? The cheap mags (not IMI) that were sent with my upper are junk and I need some that work. I have had multiple FTF's which usually end up jamming a round in to feed ramp and decreasing the OAL of the round. Has anyone had this problem with this block or is it the mags. If the mag change doesn't work, should I polish teh feed ramp some?
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Posted: 1/26/2005 9:06:13 PM EDT
[#16]
Mine only works (accepts) IMI mags with the spline. These are the Uzi 25rd mags with the star stamped on it. I gave up on other Uzi mags - they don;t fit or are too tight.
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FIN
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Posted: 2/14/2005 11:23:47 AM EDT
[#17]
Where exactly should I file? Would like to avoid unnecessary work  Just the rear corners? All the way to the top of the block or just the lower part or what? At the moment my mags go in maybe a bit more than in inch. |
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TX, USA
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Posted: 8/6/2005 2:16:47 PM EDT
[#18]
I'm having trouble with the last round feeding out of the mag the angle of the follower seems too steep is there a fix for this?
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Posted: 8/6/2005 2:26:59 PM EDT
[Last Edit: SBR7_11]
[#19]
Some have noted that you could attempt to bend the legs on the Uzi follower, but the follower is very hard/brittle.
You could try to weld a "dab" on the follower to change the angle on the loaded round, or some sort of hard epoxy/Browneels' Acra-Glass, then re-contour. Myself, mine feeds all the rounds out of all my mags - 32rd IMI commercial, 25rd IMI commercial, and 25rd mil contract mags. 
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Posted: 8/6/2005 3:14:20 PM EDT
[#20]
If it will not feed only the last round, it will only take a very slight adjustment of the follower. take apart the mag, flatten the angle of the follower just a little by bending the legs closer to perpenicular to the top of the follower, reassmble mag and test with snpa caps. Once you find the proper angle it is easy to mod all your mags. You will want to use a pair of vise grips and a pair of pliers to do it...gently and slowly are the keywords here.
My rifle would not strip the last 4 rounds off the mag, and I did not break a follower when adjusting them. |
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Posted: 1/7/2006 1:46:06 PM EDT
[Last Edit: 762-4-U]
[#21]
what about 32 rd mecgar mags?These are the blued mags with IMI stamped vertically on the bottom. will they work ok in the block? these were sold in the "UZI' packaging.
Let me know H |
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Posted: 1/15/2006 7:42:59 AM EDT
[#22]
tag
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Posted: 1/15/2006 12:11:00 PM EDT
[#23]
No. They will not work. The back is too wide to fit without filing the block. I bought $150 worht of meccar ,mags to find this out. 
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Posted: 1/15/2006 1:39:43 PM EDT
[Last Edit: SBR7_11]
[#24]
Yup, John not CAD/CAM the opening the same as the std UZI magwell.... break out a small diameter round file, and a flat file, and simply open the block' well to same as std Uzi well... Mag with rib is 25 rd contract mags, the flat rears I have are "IMI" marked comercial mags.  See the IMI flat mag in the firearm/magblock... 
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Posted: 1/8/2007 8:13:11 PM EDT
[Last Edit: AR15barrels]
[#25]
I recently purchased a Hytech block from Brownells so that I could use un-modified Uzi mags.
I had read this thread and hoped that some of the problems had been solved in later versions of this block. My block fit into my Olympic "test fire" lower very nicely and when the Rock River upper was closed down on it, it locked the block solidly into place. There is some machining after anodizing on the block, so it was re-worked by Hytech at some point, but not stripped and re-anodized which would have been nice. The only problem I experienced was the failure of the mags to stay in place. All my mags were military 25rd mags with a rib and a star. I take it these are IMI? Looking at the drawing in the first post, my mag catch is considerably different. See the pictures below. It has a pronounced hook to it to help with the "camming outwards" problem. Well, the hook does seem to help, but what I found is that the mag catch itself was not engaging into the magazine enough as the magwell has some room for side-side play, maybe 0.025" or so total. When I held the mag towards the catch, I could pull on the mag as hard as I want and it stayed in. If I held the mag to the other side, it only takes light pulling to make the mag come out. Also, the mag catch was seating in the block and stopping, leaving the mag free to move side to side. In any other magazine-fed gun, the mag catch usually has extra engagement to eliminate the side-side play, at least in my experience. So, I decided that the mag catch needed additional inward travel. What I did was to strip the mag catch from the block and setup the block in the mill. I cut a slight taper below the existing shelf. I also cut the radius deeper. While using a punch as a slave pin for testing, I could not get the mag tube out no matter which way I pulled it in the mag well. I thought I had it solved, so I put it all back together with the roll pin. Well, with the roll pin in place, the mag catch did not have as much engagement. My next step was to open up the hole in the mag catch by 0.009". Lastly, I took a 1/8" punch and lightly tapped inward on the mag catch. This cleared out any burrs or things I missed and the catch now has about 0.025" more inward travel than when it was new. This was enough extra mag catch engagement which seems to have solved my problem. Took the gun to the range and proceeded to bump fire all 6 mags without any issues.  
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CO, USA
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Posted: 1/20/2007 10:05:10 AM EDT
[Last Edit: GhoSSt]
[#26]
So if I'm reading this thread correctly (and I did twice) the 2nd gen block will take the flatback, square corner IMI 32rdrs that CTD sells right?
Like these: http://www.cheaperthandirt.com/ctd_images/lgprod/MGR-069.jpg GhoSSt |
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SC, USA
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Posted: 4/19/2007 10:17:33 PM EDT
[#27]
I received my block today from Brownell.
I have 30 of those magazines you show in your post. They all bind in them. They will go in if you beat them in, but then you got to struggle to get them back out. Tommorow I will file the back of them adaptor. You figure that after being out in the market place for over 3 years they would of worked out all of the bugs in their adaptor. 
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SC, USA
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Posted: 4/21/2007 2:01:31 PM EDT
[#28]
I spoke to Voly@HYTECH.
He said that the mags are 50 thousands oversize and that is the problem. I ended up damaging the adaptor trying to get the ejector pins back in. They were EXTREMELY tight for some reason. Adaptor is on the way back to hytech. |
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Posted: 10/14/2007 7:12:21 PM EDT
[#30]
I've got a RRA adapter...Colt type that uses the 9mm Colt mags and I've got a RRA Oly type that uses modified UZI mags....I prefer to use Uzi mags since I have more of them..I just hate to modify them so they will work properly...so after reading all this I think I am going to try and get a recently produced Hy-Tech adapter to buy or trade for...anybody have an extra one laying around please email me
...jackpot |
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Posted: 10/14/2007 8:21:24 PM EDT
[#31]
Wonder if you have an old one if you can send it to them to reem out or adjust?
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Posted: 10/17/2007 8:50:15 PM EDT
[#32]
well, I ordered one from Brownells last night...I really hope this thing is as good as I've read....if it is..I'll be adding my other two blocks to my trade list..LOL...
jackpot |
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Posted: 10/17/2007 9:42:38 PM EDT
[#33]
Let us know how it works with 32rd mags when you get it. |
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Posted: 10/18/2007 11:53:15 AM EDT
[#34]
you bet...I sure will... jackpot |
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Posted: 10/23/2007 6:37:12 PM EDT
[#35]
well...I got my new Hy-Tech block in yesterday...Monday.....all I've been able to do sofar is try my mags in it and hand cycle...and great news is that all my mags work in it...fit perfectly....that was 54 star 25rd mags with folded over sean rib , 16 flat back 25 rders...and 15 flat back 32 rders.....not one mag was too tight...and the mag release has a raised button on it as compared to a flat mag release I saw on a pic of one....definitely very easy to push....the only question that I can see and it doesn't seen at the time to be a problem..just different....is that to release a mag from the well...the mag must be pushed in slightly towards the bolt before you can push the mag release lever and disengage the mag....but it does work everytime.
so I just need to get actual time at the range.... Russell |
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Posted: 10/26/2007 7:18:10 PM EDT
[#36]
Glad to hear your mags fit. |
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AK, USA
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Posted: 3/14/2008 8:34:02 PM EDT
[#37]
4 months , have you shot it yet ? getting ready to order this block and would like some recent news please
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NY, USA
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Posted: 3/16/2008 9:29:22 PM EDT
[#38]
FWIW, I got one of the adaptors from Brownells last January, and it's accepted the suplus UZI mags perfectly. My carbine runs 100% with a rifle fixed stock/rifle buffer and spring. The block fits snugly when you close the upper, and will not allow you to depress the standard AR mag catch by mistake. I'd do it again in a heartbeat.
RRA flat top upper, HyTech block, rounded hammer with ramped 9mm bolt. No trigger slap, runs like a sewing machine. DanG |
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ASM
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Posted: 4/20/2008 8:21:44 PM EDT
[#39]
I'm in love. I did a 25 rd mag dump and it ran without a hitch. The issue about pushing up to release the mag catch is correct, but at least the mags don't fall out. I had so many problems with the Hahn adapter that I almost gave up. The unmodified UZI mags are the deal of the century. |
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NM, USA
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Posted: 10/26/2008 3:51:56 AM EDT
[#40]
I got one of these from Brownells and it was full of dings like it had been in a box of parts rattling around. Sent it back for a replacement and got a better one. Flat back mags fit fine, mag release works great. Only one problem, the top of the adapter interferes with the inside of the upper receiver. If I insert the adaptor in just the lower it fits fine but the upper will not close. If I pin the upper and lower together the adaptor will stop about .050" short of seating. I have tried 2 lowers and 2 uppers. I'm disappointed, I have 16 UZI mags and no use for them now.
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NY, USA
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Posted: 10/26/2008 4:23:42 AM EDT
[#41]
Originally Posted By wrhk33: I got one of these from Brownells and it was full of dings like it had been in a box of parts rattling around. Sent it back for a replacement and got a better one. Flat back mags fit fine, mag release works great. Only one problem, the top of the adapter interferes with the inside of the upper receiver. If I insert the adaptor in just the lower it fits fine but the upper will not close. If I pin the upper and lower together the adaptor will stop about .050" short of seating. I have tried 2 lowers and 2 uppers. I'm disappointed, I have 16 UZI mags and no use for them now. What make of uppers and lowers? Also, when did you buy the block itself? |
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FL, USA
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Posted: 10/26/2008 6:27:32 AM EDT
[Last Edit: J_M_C]
[#42]
It did not take me long to figure out that with my BM lower and RRA upper, I needed to lock my bolt back before inserting the VM mag block. Once the bolt is in the rearward position, slide the block in, a "smart" rap with the heel of your hand on the base of the block locks it into place and it stays there until you hit the mag release to remove it.
My 25 rd. IMI unaltered Uzi mags, that's why I liked the VM block, run 100% in my gun. I just ordered 7/32 rd. mags, all reported to be new IMI mfg. Mine works great! |
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Posted: 10/29/2008 8:56:35 PM EDT
[Last Edit: Kharn]
[#43]
I took my SBR to the range last night (BM lower, RRA upper, Hytech block, German contract mags, Rem value-pack JHP ammo), two of my mags would have a FTF on the second-to-last round if I fired the third-to-last but load just fine if I put two in the mag and pull the charging handle. A third mag would show the FTF-second-to-last about 50% of the time, and one mag ran 100%. All mags functioned fine when loading and firing the odd-numbered rounds, all function properly in my semiauto Uzi.
The failures all involved the rounds being nose-high, stuck with the nose against the top of the breechface (about half the bullet below, half above the rim of the chamber) and the case head against the bolt. The inertia of the bolt seats the bullet about 2mm deeper into the case. I forgot to test the 100% malfunctioning mags with five rounds (so that it'd load the fourth-to-last while cycling under recoil which would tell if its that side or just the last round from that side that're problematic), the most I put in them was four IIRC, but the 50% and 100% mags functioned great with five rounds. But I'll do that when I go to the gun range again on Sunday. My range requires enclosed-base ammo, thus the JHPs and WWB being out of the picture unless I drive an extra 40min to a different range. Any ideas? Kharn |
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FL, USA
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Posted: 10/31/2008 6:45:17 AM EDT
[#44]
I may be a day late and a dollar short on this one however, my recently purchsed new IMI 32 rd. mags. from two different vendors, all go into my VM mag block perfectly w/o any binding or issues.
I had a chance to test fire three of the mags yesterday. With 124 gr. and 147 gr. ball, full powered ammo they worked 100%. First time for each, 96 rounds down range w/o a problem.
I say full power because I have a lot of lower powered match type 9mm ammo that isn't always 100% in my gun but it's not the fault of the gun, mags or the block, it's the lower power of the ammo that causes FTF because the bolt does not travel far enough rear ward to pick up the next round reliably. All in all, I'm very happy with my VM mag block choice w/my 25 and 32 rd. mags.
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FL, USA
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Posted: 10/31/2008 9:05:36 AM EDT
[#45]
Originally Posted By J_M_C:
I say full power because I have a lot of lower powered match type 9mm ammo that isn't always 100% in my gun but it's not the fault of the gun, mags or the block, it's the lower power of the ammo that causes FTF because the bolt does not travel far enough rear ward to pick up the next round reliably. I've read similar reports involving Rem-UMC bulk pack 9mm ammo in the yellow box. |
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NM, USA
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Posted: 11/3/2008 9:31:00 PM EDT
[#46]
Update.
I followed the advice of another member and filed the top corners of my adaptor. It did not take much and now I can insert my adaptor with the upper and lower closed. I understand why some don't like it this way but for me it is what I was looking for. I had a few of the nose high bullet pushed back into case failures. Most likely the magazines fault. Ammo was WWB 115gr. Only shot around 50rds, so far I'm happy with the adaptor since I filed on it. |
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Posted: 11/4/2008 8:25:50 AM EDT
[Last Edit: Kharn]
[#47]
It seems running my SBR dripping wet and a few more mags has allowed it to break in nicely. I had a few early jams on Sunday at the range but then it ran perfectly after that.
I like having to shotgun the upper to remove the block, I dont want to accidentily dump a $140 piece of gear on the firing line, much less should it happen during a serious situation, due to muscle memory gained from all the .223/.22lr shooting I've done. Kharn |
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NY, USA
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Posted: 11/4/2008 4:14:36 PM EDT
[#48]
I received my block, and did a little review on it.
http://www.ar15.com/forums/topic.html?b=3&f=15&t=403228 |
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NY, USA
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Posted: 11/23/2008 6:22:29 PM EDT
[#49]
Finally got to try out the Hy-Tech!
It fed flawlessly. I won't lie, I was expecting to have some things go wrong. Not necessarily with the block itself, but with a 9mm AR in general. All the reading I've read about little tweaks that were usually needed to get 9's to to run right. So I was pleasantly surprised with the overall performance. I didn't shoot for groups or anything. I just blasted pumpkins left over from Halloween. I'm not sure I will even bother to shoot for groups. This is just a fun gun, and being that I was hitting a 6"-ish pumpkin consistently from 40ish yards, I'm more than satisfied.
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MA, USA
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Posted: 12/4/2008 10:34:26 AM EDT
[#50]
Originally Posted By wrhk33:
Only one problem, the top of the adapter interferes with the inside of the upper receiver. If I insert the adaptor in just the lower it fits fine but the upper will not close. If I pin the upper and lower together the adaptor will stop about .050" short of seating. I have this same problem. Could you give a little more detail as to what you did to fix it. Thanks!
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