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Discussion Starter · #1 ·
Other than the chop your carry handle thread I haven't seen much on Back Up Iron Sights(BUIS)

I want to replace the Tactical Carry handle in my Entry Tactical, and an optic is in the near future.

I keep coming back to the A.R.M.S. units

What is everyone running?
How do you like it?
Do they hold a zero?

any thoughts?
 
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Discussion Starter · #2 ·
I have the A.R.M.S. it's fine, holds it's zero. I'm getting rid of it though because I wanted the RRA dominator2 Eotech mount. I wanted to protect the rail on my upper, and I found I prefer the traditional A2 rear sight, over the flip-ups.

If you haven't read it, here's a ton of info on BUIS: http://www.ar15.com/forums/topic.html?b=3&f=18&t=206233

If you decide to go with the A.R.M.S. let me know I can make you a deal on mine.
 
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Discussion Starter · #3 ·
Thanks AJCRASH for the link

I am a member over there and have read quit a bit

Just check peoples experiencesover here


what arms sight do you have?
 
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Discussion Starter · #4 ·
It's the older 40, not the LP 40 they have. If I can't get rid of it I'll just hang onto it for a long range build I'm considering. But if I can sell it and offset the cost of the dominator mount that would be nice too.
 
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Discussion Starter · #5 ·
The best BUIS is the Troy, IMO. It is a same plane BUIS, and runs about $140. I also like the Midwest Industries BUIS. It's about $45-50 less than the Troy, and not same plane, but it is sturdy and easier to adjust for windage, due to the A2 style knob. The Troy unit requires a bullet tip or tool to depress the detent and adjust. I have both, and I like them better than any other BUIS on the market.
 
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Discussion Starter · #6 ·
I'm running both the Troy and ARMS #40L-SP (low profile same plane) The Troy is superior by far, but the ARMS isn't bad if you're not knock down doors or diving in the dirt too often. You can fine the Troy's for about $120 on ARFCOM the ARMS for about 100 or some times 90. Both work, hold their zero and aren't in the way of optics.
 
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Discussion Starter · #8 ·
OK let me ask you this........what type of optic/mount ?

Knowing this will help deciding what type of BUIS would be best.

Mike
Well that is another issue

when I say optic I (at this time) mean red dot eotech or Aim Point 1x

I do have interest in a something up to a 4x acog, but not at this time

40-45
 
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Discussion Starter · #9 ·
Well that is another issue

when I say optic I (at this time) mean red dot eotech or Aim Point 1x

I do have interest in a something up to a 4x acog, but not at this time

40-45
OK I like the chopped carry handle behind a Aimpoint, but not an EoTech.
I like an uncluttered, absolute co-witness sight picture with the Eo.
Same with the Aimpoint unless it is raised up to 1/3 lower co-witness and I'm looking over the top of the BUIS.

Mike
 
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Discussion Starter · #10 ·
so the eotech will co witness with front post if mounted directly to flat top

if so then a lowprofile buis behind the eotch in case the sight goes down
 
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Discussion Starter · #11 ·
The AP will absolute co-witness as well, just depends on your choice of mounts. The reality is that both the EOTech and the AimPoint are exceptionally good optics for their role. That being sub 100m engagements. Add on a Magnifier of one sort or another and you can easily go to 300-400m with a simple 2.5x-4x addition.

Do bare in mind that if you add a regular scope or add a magnifier down the road, you're really going to wish you bought a low profile BUIS the first time... ask me how I know :) AR's like a lot of cars that are or can be tricked out fall under the rules:

1. You get what you pay for (with very rare exceptions)
2. Buy once, Cry once

Well at least those are the lessons I've learned over the last many years.
 
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Discussion Starter · #14 ·
The AP will absolute co-witness as well, just depends on your choice of mounts. The reality is that both the EOTech and the AimPoint are exceptionally good optics for their role. That being sub 100m engagements. Add on a Magnifier of one sort or another and you can easily go to 300-400m with a simple 2.5x-4x addition.

Do bare in mind that if you add a regular scope or add a magnifier down the road, you're really going to wish you bought a low profile BUIS the first time... ask me how I know :) AR's like a lot of cars that are or can be tricked out fall under the rules:

1. You get what you pay for (with very rare exceptions)
2. Buy once, Cry once

Well at least those are the lessons I've learned over the last many years.
Without a doubt pay attention to this advice. Badshot is a definite sureshot with this advice. ;) I don't have a BUIS but will one day. I have experience with both Aimpoint Comp ML2 and currently the EoTech optic. For my use and purposes either sight is excellent .... that is for 100 yard shots and less. I think I like the EoTech better for my distances because it makes target acquisition so much more instinctual ... i.e., easier and quicker. Now if I had a .308 upper I might save up my hard earned cash for a ACOG someday.

Kind of an edit PS here .... I had a buddy look into the magnifier for the Aimpoint setup. Look long and hard into this before going this route. He mentioned expense and mounting issues. I don't know the details and haven't looked into the details myself but with all the research he told me about I'd be inclined to believe him.
 
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Discussion Starter · #15 ·
Kind of an edit PS here .... I had a buddy look into the magnifier for the Aimpoint setup. Look long and hard into this before going this route. He mentioned expense and mounting issues. I don't know the details and haven't looked into the details myself but with all the research he told me about I'd be inclined to believe him.



picked this LaRue "Po Boy Special" up used for $165.
A mount like this and the Aimpoint magnifier will run you over $400 :shock:
 
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Discussion Starter · #17 ·


picked this LaRue "Po Boy Special" up used for $165.
A mount like this and the Aimpoint magnifier will run you over $400 :shock:
Yeah I blame Mike here for my latest spending spree.. dammit, trying to keep up with him is gonna break my wallet :shock:

There are some very good mounts out there that either allow you to flip the magnifier out to the side or simply twist it off.

Another option to consider is quick detaching mounts for different optics. I can't say that I'd put a CQB optic on a .308 rifle.. I'd rather have a short dot 4x like the IOR, Leupold or Millet DPMS-1 on a good QD mount and the EOTech w/ the GG&G QD lever to swap out pretty easily. All of the good and repeatable zero mounts are going to run you a pretty penny.. 100-200 for the two options I mention here. I'm basing that off of pretty much using LaRue mounts, possibly ARMS and or GG&G .. you can get other stuff, but if you're serious about this stuff and not just wanting to look cool or just have something that basically meets the need, then you can't look at anyone but LaRue, Troy, Samson, ARMS and GG&G.

That isn't to say that if you're not in need of mounts that will be around after global warming is done that you can't find them. I'm also not meaning to be overly critical of other's choices of mounts. Me, I prefer to do it as right as I can the first time. That means that I have to save up a bit more to get the right stuff.
 
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Discussion Starter · #18 ·


picked this LaRue "Po Boy Special" up used for $165.
A mount like this and the Aimpoint magnifier will run you over $400 :shock:
Looks like a great set up! On second thought I am wondering if he was talking about a magnifier for an EoTech??? I can't remember ... gettin old! I'll try to ask him today and get back to you guys. This set up to me looks like it would be pretty simple ... just expensive!
 
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Discussion Starter · #19 ·
Looks like a great set up! On second thought I am wondering if he was talking about a magnifier for an EoTech??? I can't remember ... gettin old! I'll try to ask him today and get back to you guys. This set up to me looks like it would be pretty simple ... just expensive!

Same principle, just a different mount for the Eo depending on if you have the Eo on a mount or direct on the rail.

Mike
 
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