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Posted: 3/27/2006 11:00:57 AM EDT
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I have a new one which I used it for about 100 rounds of iron shooting without a problem. I just had a chance last weekend to try out my new Eotech 512 (I loved it but that is for another thread), and because of the use of the optic I had the Matech flipped down for the first time during firing. Well, it pops up during recoil on EVERY shot, which pretty much ruins the nice clear sight picture (I have a YHM flip FSB). I looked at it (the Matech) breifly and did not see any adjustment mechanism. Do I have a defective one or is there a way to adjust it? |
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I read it, and as a fellow MATECH owner I don’t know what to say. Only thing I can suggest is trying to find a way to hold it down in the retracted position. Mine locks down very solid and actually takes quite a bit of effort to flip into position. You say 'new". New to you or was yours purchased used? |
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I bought it new from the EE here, this was just the first time I ever shot it with it in the down position. It pops up with very little effort, but I figured that was how it was supposed to work, it never occured to me that there was not enough effort. There's a small bump at the base of the verticle bar where it goes around the pivot shaft. I don't know if the bump is too small or maybe there should be a detent below it or something. It does not appear to be "user serviceable" to me. Guess I should try to contact the manufacturer. I just was thinking the level of experience here would be my best bet. |
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Here's a suggestion... try at own risk. With a pair of needle nose pliers, sqweeze the yoke the flip up is housed in a little bit until that "bump" is in the right place. As for this comment:
Give it a rest! Unless you personally know facts surrounding this unfounded internet rumor posted by one soldier about one incident. |
Yeah, sorry. Enjoy your shady part guilt free while you play soldier. Your hobby is very serious business. |
Matech's sometimes wear out on that little tit that holds them down. After there is nothing you can do other than taping it down. That is the only drawback to the sight. My advice for new Matech users is to sight them in and leave them down. If you aren't changing ammo every other week there is not much use in checking your BACK UP Iron Sight. Also, keep the tit well oiled. Just watch the lettering- it could come off with CLP.
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 Troll, go somewhere elso and be an fuckstick |
So who is the civillian distributer for them? Come on, Matech doesn't just sell one or two at a time to individuals to sell on bulletin boards. Their has to be a middleman who buys in bulk and sells them to the dealers, just like everything else. Try sending it back to matech for a warrenty repair. Edbert, They should be very hard to flip up. All that holds it down is a bit of metal on the base that sort of clips into that notch on the flip portion. If it's worn (not likely since you say you haven't flipped it up and down a few thousand times) or more likely, a factory defect, you might have to just get used to it. I'd be afraid of trying to bend in the bottom portion because it seems it would take a lot of force, and I don't know if the "ears" could take it without breaking. Actually, try contacting the company. See what they say about it. www.matech.net/ Email: [email protected] Phone: 410 548 1627 Their contact page, even has a commercial sales contact, www.matech.net/contacs.asp?home=3 At least I think this is the one that makes the BUIS. There are like a thousand companies named Matech. This one makes items for the defense industry. The others are things like a Chinese fur company, some bridge crack detector maker, and tons of other crap. Let us know what they say, maybe they can put this argument to rest (or not, as there were still many that claimed there were tons of legal hi-cap .45 mags for the USP or MK23 even when HK there were none in the country before the ban, so you never know.) |
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I bet this sight has been flipped up/down about 50 times, so unless it was used it MUST be a defect. A visual inspection gave no indication it had ever been installed, there were no marks whatsoever and the red blob of locktite looked just like the pictures in the BUIS sticky. I sent them an email, to the commercial sales guy "Rich". From what I've read they are not very good about replying, but I am trying to be optimistic. Regarding the dealer...I bought it new from an "xxxxxx" on the EE. I don't know the right term, member or sponsor etc. and do not want to misspeak, but the ad was in bold text, the seller had a positive feedback and I had no idea that these were "contraband". At this point I am still not sure that they are, but I am no expert and still fairly new around here. If anyone in a position of authority wants the name/address/email of the vendor just let me know in private. He had more than one of them and they all sold rather quickly, it was in January 2006 but I do not have access to the archives. Thanks for the help, I'll post here if I find out anything that is not classified...LOL. |
There are soldiers in my unit w/o BUIS because of the guys we replaced taking theirs and selling them. That's a fact. I'm not saying that any particular person's MaTech is stolen, but I do wonder about those ebay ones, considering that they are not distributed to the civvie world through any normal channels. Go do something real with your toy rifle and then call me a fuckstick. |
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Matech BUIS......Do some soldiers take them? Undoubtedly..Failure of the unit armorer/supply NCO to maintain accountability. That is the people to blame. As far as them not being available retail to the public...Not true. Here are just a couple of sources. www.fbmginc.com/weapon_accessories.htm www.ediscountclothes.com/cgi/search.pl?S=matech&C=7301 |
So you have a guy who is always "out of stock" except when selling to LEO/.mil, and then the second example is yet another ebay seller. I would like to see a regular civvie distributor. To add something helpful: FWIW, my Matech has performed very well. Durability has been just fine. If I could get my hands on a truly legit civilian one, I would snap it up. |
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www.fbmginc.com/ Click on products, do your shopping and click on checkout. Looks like a dealer to me with a storefront to boot. So because he is "out of stock", they are illegal? Weak arguement. |
The reason I say this about them is because I have tried to order a Matech from them before and I get the runaround. If they are in fact a distributor for Matech, I hope they someday get some so I can get one for myself. I never said that "because they are out of stock it is illegal", so stop constructing straw man arguments. All I meant is that you still haven't shown me an official civvie Matech distributor moving Matech BUIS. If you do find one that I can order from, let me know. I would be very happy. |
My email message bounced, it was sent to Ray not Rich, but either their IT guys (or thier ISP) is having trouble or Ray does not have an inbox anymore. Here's the message:
I'll see if the phone works any better. |
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Why can’t we put this shit to rest. We already know that some GI’s are selling their MATECHS on eGay, is that my fault……..NO. Have the units hand receipt the damn thing, hold the soldier accountable for his equipment, I know I was! If the units can’t do that then the BUIS shortage must not be a high priority to the leadership over there. Second, there are legit sources out there selling legit MATECH BUIS’s. Are they a distributor of MATECH products, don't know, don't care. Did they purchase those BUIS’s direct from MATECH, I don’t know, never asked, don’t care. But does that mean the BUIS’s are stolen? You guys who bring up this stolen MATECH BUIS shit every time a MATECH thread pops up end up getting the thread locked. Let’s give it a rest. 
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The problem is with follow-on units not getting the equipment when they should, which is not something controllable by their equip priorities. The reason I get worked up is because I saw myself and someone else endangered by soldiers not having BUIS in a firefight. That makes it personal to me, so you'll have to excuse me if I get a little worked up. That said, I just want to know where to get a legit one so I can buy one for myself. So if anyone has a line on one, let me know, because the only place I've been able to find them actually for sale is in the EE and Ebay. Thanks. Consider it dropped, until someone else brings it up. 
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One quick point about the TOPIC of the thread. Is there a change that your Matech doesn't have that little spring? There is a spring that adds pressure to the flip up part to make sure the solid detent holds? You should be able to see the spring on the left side of the flip up, right at the rotation point. |
Most of the Matech BUIS's that we had issued to us broke before we ever left for Iraq, and after that a bunch more broke in country. I broke 2 of them myself but then had an ACOG issued so I ran the rifle without a BUIS. When we did our handover leaving Iraq (just a couple months ago) Matechs were not on the list of handover items at that time, my ACOG however was, along with a few other items. I would not have wanted to count on one of them to save my life but for the range I wouldnt mind having one. I have seen one kinda survive an IED tho, here is the picture. This was in the track I rode in, I however had just dismounted it a few minutes before the blast.   |
The new Colt LE1020 has a Matech on it. This will be available to civilians in a few months. |
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Contrary to drama belief, here is link to purchase from a dealer that has them in stock. www.fbmginc.com/firearmsaccessories.htm |
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I bought mine new, in package about 1.5 years ago. Only flipped it up and down about 30-40 times since then playing with it but it is still nice and tight. Never had a problem. There's a little tit on the left side that acts as a detent. I would think that the manufacturer should fix it for you. If you had to fix it your self I would... make sure there is spring pressure pressing it against the left side. determine wether the tit is small or there is damage on the left side of the flip up site. then put a little spot weld on it and do some delicate grind work with a dremel. All else fails buy a new one. |
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Saturday, April 22, 2006 Hi Guys: I have four Matechs, one each on my various Class 3 M4 Carbines, and I have never had a problem with any of them. I have used these Matechs extensively in that on my two M4s that have EoTechs on them, I always leave the Matech aperture post in the ‘UP’ position when the M4 is stored. When I get to the range, I put the Matech’s aperture post in the ‘DOWN’ position. Each time I do this, the Matech’s aperture post ‘clicks’ very audibly and feels quite tight, so tight it takes some considerable effort to get the aperture post in the up / down positions. Also, on accession, I will remove the EoTech and just use the Matech, often adjusting the windage and elevation. Always when I do this, the adjustments are very positive with solid mechanical motion with very audible ‘clicks.’ The only input I can offer based on my experience is that either: the Matech you purchased was not so new, probably a GI take off that has been used and abused; or, you are not pushing the aperture post all the way down until it locks and ‘clicks.’ Perhaps some dirt / foreign matter as gotten into the Matech assembly, blocking the aperture post from fully folding down into the ‘DOWN’ position; maybe a good cleaning with WD40 would help. Remember that Matech is not a true BUIS, but an Air Force variation of, substitute for, the standard carry handle-rear sight assembly used by the other services. That is way it is adjustable for windage and elevation to 600 meters and most other true BUIS are not. A good example of a true BUIS is the version produced by LaRue Tactical. Good luck and Good Shooting! MP5 Machinenpistole |
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I have emailed and phoned the company but received no reply to the email and was only able to leave a message via telephone. Matech is definitely not ready or geared towards serving a consumer market. I have examined the unit as closely as possible without disassembly. 1.) The "tit" is not visible at all due to the pin. 2.) There are two springs, one provides the tension to keep the post in the UP position, the other keeps tension on the range adjuster. 3.) There is no indication that this unit was used at all much less abused. It was advertised as new and looked it, right down to the red locktite on the screw. 4.) There IS a tactile and audible click when the post is put into the DOWN position, but it does not require considerable effort to raise. In fact if i violently change from 600M to 200M (emphasis on the abrupt and rough adjustment) I can get it to raise to the UP position about half the time. But recoil from firing does it on every shot, and the .223 has as little recoil as any centerfire rifle I've ever used. At this point I guess all I can do is take it apart for a closer exam. I've been hesitant to do that for fear of voiding some sort of warranty but since the company will not answer I guess that is already a forgone conclusion. ETA: This is the ad I purchased from: http://ar15.com/forums/topic.html?b=7&f=23&t=323321&page=1 I'm contacting the seller for another opinion. |
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Here is the deal: In this pic, notice the yellow arrow, it is point at the pivot pin. The red arrow is pointing at the locking lip.  I am only now learning that this is a known MaTech problem but the fix is not that hard, I think all the new ones will be strike to prevent this in the future. Anyway the problem is that the pivot pin is walking to one side or the other. This allows the flip up aperture bar to lean and avoid the locking lip. Simply move the pin back into place and strike it like you would a gas key or a carbine buffer tube locking nut. This should prevent the pin from traveling and the sight should function properly. Once I am able to get back to civilization, I will get some pics of the procedure and post them, this will be a month or so. Edbert, I am sorry that you are having this problem, I guess this kind of thing happens when new equipment is fielded with out extensive testing, but know there is a fix should be some comfort. |
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