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Posted: 10/21/2009 7:54:51 PM EDT
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I'm new to the AUG and until recently was pretty much against them due to an experience with one back in the late 1980s that left me less than impressed. Now, with the MSAR offering and handling one recently, I'm quite impressed. What concerns me, however, is heat. I know when I shoot my M-4 clone, that the front can get hot, even with the railed handguard and extra air circulation. How does the AUG handle heat? I'd like to do classes with it, or just be able to shoot a lot at the range, but don't want to have something that warms the face.
Thanks! Kurt |
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I just ran my A3 hard in a carbine class. It did heat up a bit, but not too bad. The gas system being on the outside helps it cool off pretty fast.
ETA: The heat you feel most is from the gas manifold and bbl. The receiver heats up a bit, but doesn't get too hot to touch. I usually wear thin gloves when shooting in a class or competition, so it's not a problem. I've heated it up too! Did a 3x42rd mag dump the first time out to function check. No issues at all. Nice not having all those gasses coming back in your face like a DI AR-15. |
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The MSAR comes standard with a flutted barrel, which does help it dissipate heat faster and cool faster. They have done heavy barrels as well, but I'm not sure if they presently have any available.
The MSAR also has an extra slot cut in the right of the reciver than the AUG, which again is placed there to help it cool faster and I believe it does this well by venting more. Not to mention say you're just burning through ammo like an absolute mad man even full auto. With the AUG/STG/AXR you can just quick change out your barrel while other folks have to rest. MSAR sells barrels for about $450.00 and it takes about just seconds to swap one out. Accessories on the MSAR are mounted below the receiver vents so it keeps them nice and open and clear. Heat Rises naturally. Piston system vents the heat outside in the cool air free to breath. Good stuff. Really well designed to take heat. |
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If heat was an issue, there's no way the polymer stock could be mated so tightly to the receiver. Remember, this rifle was originally designed to be full-auto, and able to fill the LMG role with the 24" heavy bbl.
Also, don't underestimate the potential of the receiver and rails to act as a heat sink. The bbl fits relatively tight to the receiver and conducts its heat to it. Aluminum is an excellent heat sink. |
Op has a good point, I do notice my msar does heat up pretty good. I find that the heat is transferred from the barrel to the reciever, then my scope mount, then finally my scope. The only reason im asking is that I had a Millet Dms1 on my masr and after firing about 500 rounds in say 1 1/2- 2 hours, one of the scope's lens "shot out", the one with the crosshair. I wonder if it could have been caused by the heat exposure. I mean 5.56 doesnt recoil much so I really doubt that was the cause. I put an acog on it now and am curious if the heat will ruin it, especially if I decide to get trigger happy .
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Quoted:
Op has a good point, I do notice my msar does heat up pretty good. I find that the heat is transferred from the barrel to the reciever, then my scope mount, then finally my scope. The only reason im asking is that I had a Millet Dms1 on my masr and after firing about 500 rounds in say 1 1/2- 2 hours, one of the scope's lens "shot out", the one with the crosshair. I wonder if it could have been caused by the heat exposure. I mean 5.56 doesnt recoil much so I really doubt that was the cause. I put an acog on it now and am curious if the heat will ruin it, especially if I decide to get trigger happy .Those Milletts have had some issues. Good warranty, but I'll wager it's not your AUG. |
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No problems here. Can I ask what your bad experience was in the 80's? A friend owned one and we took it to the range. I was used to a Colt's AR-15 with a better than average trigger and when I shot the AUG it felt like I was shooting one of those disc shooting guns that were popular when I was younger. It had mass, but to me it felt like a toy. And besides, what real man needs a scope on a fighting rifle? Right? Times change, things get better, and I've learned a lot since then. So I gave it a second look and while the trigger isn't match grade, for what the rifle is intended to do it will be much more than adequate. Kurt |
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Quoted:
I just ran my A3 hard in a carbine class. It did heat up a bit, but not too bad. The gas system being on the outside helps it cool off pretty fast. ETA: The heat you feel most is from the gas manifold and bbl. The receiver heats up a bit, but doesn't get too hot to touch. I usually wear thin gloves when shooting in a class or competition, so it's not a problem. I've heated it up too! Did a 3x42rd mag dump the first time out to function check. No issues at all. Nice not having all those gasses coming back in your face like a DI AR-15. Cool! This is exactly what I'm looking for. Thanks! Kurt |
| This is weird, mine got hot as hell after about 90 rounds rapid fire. Receiver was too hot to touch. Optic rail was hot. Forward grip was fine. Of course it was about 90 degrees out and I was shooting a mix of FC, wolf and PMC all on the high gas setting. (Wolf wouldn't cycle without it.) |
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Quoted:
This is weird, mine got hot as hell after about 90 rounds rapid fire. Receiver was too hot to touch. Optic rail was hot. Forward grip was fine. Of course it was about 90 degrees out and I was shooting a mix of FC, wolf and PMC all on the high gas setting. (Wolf wouldn't cycle without it.) I'm sure ambient temp has a lot to do with it. I can leave my AR in the sun on a hot day and it can get too hot to touch even without firing a shot through it. |
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