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Optics, Mounts, Rails and Sights If it aims your firearm, post about it here. |
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#1
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Advice request-mounting 3x prism scope in front of MBUS = horrible eye relief
I'm sure this has to have come up before but I'm just not finding a thread while searching.
I mounted a 3x prism scope on one of my AR's. Problem is, with an MBUS rear sight the eye relief is such that the charging handle is about a quarter inch away ftom my face and the weapon just doesn't feel comfortable. Threw it on a couple other rifles with different rear sight profiles and had the same result. The easiest solution would be to remove the rear sight, but I sleep better having a set of sights on a rifle even if they are polymers. Any suggestions appreciated. |
#2
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not many options if you want to stick with your hardware. Offset irons. Different prism. Get a red dot with a flip to the side 3x, so you can mount the mbus under the flip, and just use one or the other. Maybe just get a stock with a different LOP, and a steeper handgrip like a magpul k2. Nose-to-charging handle works for lots of people.
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#4
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Could always move the rear sight in front of the optic as well
-Matt S.
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#5
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With a prism scope why do you need backups. Since prisms have an etched reticle you don't have to have illumination. Unless the glass breaks there should be no need for backups.
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#6
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I ended up cutting the QD mount down a little and shaving a little off of the front facing side of the mbus sight. Was able to move it up two slots in the rail, to a point I feel much more comfortable with. Would prefer one more slot, but I can live with it now. Removed and put back on several times and its holding its zero well. |
#7
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Advice request-mounting 3x prism scope in front of MBUS = horrible eye relief
I am very tempted to use a Primary Arms prism myself. Second on the astigmatism BS. I am trying to find some locally so
I can determine which magnification floats my boat. A electronic scope in an orher post doesn’t have an eye relief issue. At about 500, it should cure my astigmatism while I’m using it. I regard to the position of the rear BUS, I would move it on the opposing side of the prism just to have it on the rifle should I crack the lense of the the scope. Sent from my iPhone using Tapatalk
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#8
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If you want a longer eye relief that what's offered by magnified prism scopes, you'll have to move to a LPVO. There's plenty of options in the 1-4, 1-6, 1-8, 1-10, and 2-7 range with eye relief between 4" and 9.5".
It's a better option anyway because you get CQB capability at 1x. The only penalty is a few ounces of extra weight.
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