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Posted: 4/3/2009 12:39:53 PM EDT
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Hi,
Now that the A3 is out I was wondering if anybody has a take on some of the differences between it and the MSAR. (I have an STG but not an Aug so it's only what I noticed in photographs) While they mostly seem cosmetic, I did notice a couple of things that I'm curious about: 1) As 1MRBEAN noted in an earlier post, the MSAR has one set of operating rod bushings in the receiver while the Aug has two. It appears from photographs that the bushings on the MSAR are a touch longer as well. Anybody know why they did this? Seems like it would be easier to just put in two bushings instead of the long flutes in the receiver. I assume there isn't a wear problem since it would show up clearly with a few thousand rounds. (I only have a thousand or so through mine) 2) The cocking piece on the MSAR is very simple, just a black "L" shape, on the Aug it's much more complex, why? 3) MSAR uses hex screws throughout with the Aug uses flat head screws, why? Probably just a manufacturing choice, I guess. Anything else I haven't noticed? Thanks, Roger PS I really, really like my STG. No problems at all since I've had it. |
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Op rods in the Msar are a new design and are supposed to be better. AUG rods are the original style.
Cocking lever on the STG is simpler because MSAR originally had a separate AR15 type bolt forward assist while the A3s is part of the charging handle, MSAR ditched the separate FA, but never upgraded the handle. Making bolts flush costs more money to do. |
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Don't dismiss the added features as "cosmetic" there is a real purpose to them all.
The STG has a more substantial extractor pin. The STG has a larger feed ramp. The STG has a 1:8 Twist Barrel. The STG stock has drain holes that allow for water to drain rather than having to be drawn out by taking down the rifle. The STG has a ribbed buttplate. The STG has quick detach sling points. The STG barrel is flutted and different lengths are available now. The STG has an additional vent cut into the receiver to allow for heat to vent. The STG has its rail mounted lower below the vents that are designed to air cool the barrel. |
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I didn't mean to imply the "cosmetic" features weren't useful improvements, I was just curious about a couple of mechanical changes.
The operating rods are "better" so a second bushing isn't needed? Better how? To clarify, the "cocking piece" is the plastic bit below the firing pin that re-cocks the hammer. On the Aug it seems to have "ears" at the top that look like they lock it into the bolt carrier, but the STG does not. Just wondering why. Thanks, rrowley |
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