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4/18/2021 9:59:29 PM
Posted: 6/6/2008 7:00:48 PM EDT
Hi, new to the site; not new to guns. I used to own a Colt Sporter match H-bar and thought I knew a little about AR's til I came here. Well I recently got a new M&P15 and after kicking around optics options ended up ordering a ACOG TA31DOC.

To the point; I have a few questions about my new setup.

1. My AR has the tall, fixed front sight. Do I need to a riser mount for the ACOG?
2. I want QD mounts for the ACOG; are these available?
3. I'm thinking, since the eye-relief is short with this ACOG, that if I want to do a rear BUIS, I should get a Troy folding-type and mount it in front of the ACOG with a QD mount. How does this sound?
4. Before I invest in alot of ammo, what's the best type for my combination of M&P15 (16", 5.56 NATO chambered, 1-in-9 twist) and ACOG TA31DOC? I assume I should be looking at FMJ, 55gr? (The Trijicon site says the ACOG I'm getting is set up for 55gr.)

Sorry if any of these are dumb questions; your advice and comments are appreciated. Feel free to offer any other setup advice or suggestions. TIA.

Link Posted: 6/6/2008 7:05:43 PM EDT
I have a TA31F on my M4 with the normal Trjicon mount. You can hardly see or notice the front sight. QD mounts are available from ARMS or Larue Tactical, Larue is the best. I'd think 62 gr. ammo will work just as good with the ACOG. That's what the military shoots, M855. Here is my setup, I use a Matech BUIS behind or rather under the ACOG. If you look at a lot of pics from Iraq a lot of the ACOG equipped guys don't have a BUIS at all. Here's my setup

Link Posted: 6/6/2008 8:26:46 PM EDT
Good advice, thanks. I've checked into the Matech BUIS and that's what I'm going with; forget about the QD mount/front mounted BUIS.

Link Posted: 6/7/2008 7:34:04 AM EDT
Wow! Things get buried here quick.

Still seeking advice.
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