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Posted: 10/9/2009 6:22:19 PM EDT
| Watching the FUG/TD stress test and me getting my MBUS today in the mail got me wondering if anyone has done a stress test on the MBUS? Anyone got a writeup or link? |
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I thought the MBUS was a rail to rail sight and not designed for the front sight to be on the gas block. Then again i think it being a high stress computer controlled injection molded polymer you would be hard pressed to put enough rounds through the gun to get it that hot without making a serious effort. This would be way above and beyond what the MBUS was designed for. Please remember i am a TROY sight fan.
I to would like to see it and some TROYS take a beating. I think put them on a cheap upper and let them ride around in some mud bound pick up trucks. Then drag them across some concrete and repeatedly toss in and out of said pick up trucks. Any one willing to donate the sights and uppers? |
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Ha! Now THAT would be what I call stupid. I'm laughing (yes, again). I am almost positive that it would break. However I think the MBUS hold up better than cheap irons like YHM, at least from an accidental drop standpoint (yes, dropped them both).
MBUS are kick ass sights for the money, just realize that you aren't paying $250 for some Troy sights (MOE handguards work great too, just realize that you're not paying $250 for a LaRue rail). I have a front MBUS on my Spikes rifle. It works well. I have no intention of scratching that Spikes upper, just in case Tom decides he wants it back someday. 
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I've got a set on my rifle.
As an engineer, I'd put them above aluminum buis as far as durability goes. Polymers are much more resilient to bumps than aluminum is. I feel that they would be less sensitive to rough handling, and therefore hold a better zero. Edit: Yes, they're not going to hold up to the same rigors as the FUG, as it's much thicker. But I feel that they would hold up much better than some other BUIS systems. |
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I'm sure Magpul has tested them. I'm sure they have too but I would love to see a video of some sort kinda like we have seen with their PMags being run over by trucks, holes blown through them, etc. Anyone want to volunteer to drag their AR w/ MBUS installed behind a car/truck on a dirt road and video tape the results? 
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Ha! Now THAT would be what I call stupid. I'm laughing (yes, again). I am almost positive that it would break. However I think the MBUS hold up better than cheap irons like YHM, at least from an accidental drop standpoint (yes, dropped them both). MBUS are kick ass sights for the money, just realize that you aren't paying $250 for some Troy sights (MOE handguards work great too, just realize that you're not paying $250 for a LaRue rail). I have a front MBUS on my Spikes rifle. It works well. I have no intention of scratching that Spikes upper, just in case Tom decides he wants it back someday. What do you think of this theory? I would like to see an MBUS stress test mounted to a gas block or on the Adams Arms Piston Kit gas block to see how many rounds it will take before it melts... if it does?
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Ha! Now THAT would be what I call stupid. I'm laughing (yes, again). I am almost positive that it would break. However I think the MBUS hold up better than cheap irons like YHM, at least from an accidental drop standpoint (yes, dropped them both). MBUS are kick ass sights for the money, just realize that you aren't paying $250 for some Troy sights (MOE handguards work great too, just realize that you're not paying $250 for a LaRue rail). I have a front MBUS on my Spikes rifle. It works well. I have no intention of scratching that Spikes upper, just in case Tom decides he wants it back someday. What do you think of this theory? I would like to see an MBUS stress test mounted to a gas block or on the Adams Arms Piston Kit gas block to see how many rounds it will take before it melts... if it does?
Well, the gas block is going to get hot. Pistons aren't magic, they get hot too. And the MBUS isn't meant for the gas block, height-wise - unless AA makes a receiver rail height gas block? I don't see it melting, short of extreme temperatures, but I do see it deforming and possibly losing zero. It doesn't have to fall off to be essentially useless to you. |
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I've got a set on my rifle. As an engineer, I'd put them above aluminum buis as far as durability goes. Polymers are much more resilient to bumps than aluminum is. I feel that they would be less sensitive to rough handling, and therefore hold a better zero. Edit: Yes, they're not going to hold up to the same rigors as the FUG, as it's much thicker. But I feel that they would hold up much better than some other BUIS systems. Not to get on the soap box but i am a Mechanical Engineer by trade and degree. I stress the trade part because i learned more there than at college. I have over 6 years experience in the "Computer controlled injection molding and blow molding field. Polymers are tough. TROY "Steel" sights are tougher. I have handled extensivley (TROY) and looked at the MBUS enough to know this with out taking a hammer to it. I did how ever notice you stated aluminum, that i would agree with, especilly since most aluminum parts are cast and not CNC milled from block stock. I know we have joked about 87GN doing a test and no I wont volunteer my TROY's I will how ever take bets on them outlasting the MBUS and any thing aluminum should he ever get around to it. And yes again for those that dont understand. Breaking shit is how we always designed stuff in one form or fashion to be "New and Improved".. |
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I've got a set on my rifle. As an engineer, I'd put them above aluminum buis as far as durability goes. Polymers are much more resilient to bumps than aluminum is. I feel that they would be less sensitive to rough handling, and therefore hold a better zero. Edit: Yes, they're not going to hold up to the same rigors as the FUG, as it's much thicker. But I feel that they would hold up much better than some other BUIS systems. Not to get on the soap box but i am a Mechanical Engineer by trade and degree. I stress the trade part because i learned more there than at college. I have over 6 years experience in the "Computer controlled injection molding and blow molding field. Polymers are tough. TROY "Steel" sights are tougher. I have handled extensivley (TROY) and looked at the MBUS enough to know this with out taking a hammer to it. I did how ever notice you stated aluminum, that i would agree with, especilly since most aluminum parts are cast and not CNC milled from block stock. I know we have joked about 87GN doing a test and no I wont volunteer my TROY's I will how ever take bets on them outlasting the MBUS and any thing aluminum should he ever get around to it. And yes again for those that dont understand. Breaking shit is how we always designed stuff in one form or fashion to be "New and Improved".. There are accounts of Troy sights getting dropped upon (while employed) and then sticking in the up position due to bent aluminum/steel. Something an MBUS would shrug off. Explain that please. |
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I've got a set on my rifle. As an engineer, I'd put them above aluminum buis as far as durability goes. Polymers are much more resilient to bumps than aluminum is. I feel that they would be less sensitive to rough handling, and therefore hold a better zero. Edit: Yes, they're not going to hold up to the same rigors as the FUG, as it's much thicker. But I feel that they would hold up much better than some other BUIS systems. Not to get on the soap box but i am a Mechanical Engineer by trade and degree. I stress the trade part because i learned more there than at college. I have over 6 years experience in the "Computer controlled injection molding and blow molding field. Polymers are tough. TROY "Steel" sights are tougher. I have handled extensivley (TROY) and looked at the MBUS enough to know this with out taking a hammer to it. I did how ever notice you stated aluminum, that i would agree with, especilly since most aluminum parts are cast and not CNC milled from block stock. I know we have joked about 87GN doing a test and no I wont volunteer my TROY's I will how ever take bets on them outlasting the MBUS and any thing aluminum should he ever get around to it. And yes again for those that dont understand. Breaking shit is how we always designed stuff in one form or fashion to be "New and Improved".. There are accounts of Troy sights getting dropped upon (while employed) and then sticking in the up position due to bent aluminum/steel. Something an MBUS would shrug off. Explain that please. Stuck in the up position is perfectly OK. A hit from the side might mean complete removal of the MBUS. |
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I've got a set on my rifle. As an engineer, I'd put them above aluminum buis as far as durability goes. Polymers are much more resilient to bumps than aluminum is. I feel that they would be less sensitive to rough handling, and therefore hold a better zero. Edit: Yes, they're not going to hold up to the same rigors as the FUG, as it's much thicker. But I feel that they would hold up much better than some other BUIS systems. Not to get on the soap box but i am a Mechanical Engineer by trade and degree. I stress the trade part because i learned more there than at college. I have over 6 years experience in the "Computer controlled injection molding and blow molding field. Polymers are tough. TROY "Steel" sights are tougher. I have handled extensivley (TROY) and looked at the MBUS enough to know this with out taking a hammer to it. I did how ever notice you stated aluminum, that i would agree with, especilly since most aluminum parts are cast and not CNC milled from block stock. I know we have joked about 87GN doing a test and no I wont volunteer my TROY's I will how ever take bets on them outlasting the MBUS and any thing aluminum should he ever get around to it. And yes again for those that dont understand. Breaking shit is how we always designed stuff in one form or fashion to be "New and Improved".. There are accounts of Troy sights getting dropped upon (while employed) and then sticking in the up position due to bent aluminum/steel. Something an MBUS would shrug off. Explain that please. Stuck in the up position is perfectly OK. A hit from the side might mean complete removal of the MBUS. Mounting being half the issue. Dont see to many mounts made of polymer.. Again not to bash the MBUS if its all you can afford or you dont abuse your shit i.e. use it in the field buy it. |
| The FBI did an evaluation on the HK UMP and I recall one of the first things to get damaged during drops were the polymer sights. Polymer is amazing when it's in the right spot. When it's very thin and unsupported I think it's just not there yet, but polymers are not all the same and they are getting better all the time. |
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Without testing the MBUS against something else, we'd never know for sure. Metal sights are not all created equal.
For perspective, I think it was on a recent G&A TV episode where they visited the Ruger factory and discussed the aluminum versus polymer trigger guard debate. Ruger had a test rig designed to drop a weight directly onto the trigger guard from ~3-4 feet. The aluminum trigger guard broke, the polymer guard did not. We've all seen the pictures of broken AR bolts - some tend to break more than others. Generally, these are usually made from an inferior steel and/or may not be treated, tested, etc. My point is that I'd trust MBUS sights over UTG and Leapers metal sights. I probably wouldn't bet on them against Troys or LMTs, but I wouldn't bet against them either. FWIW, I own BUIS from Magpul, Brownell's, and YHM. |
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