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Thread: Got AR fever

  1. #26
    DJ Niner's Avatar
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    Some of the best reasons to go to an non-magnifying optical sight are to get your target and aiming point in the same visual/focal plane, eliminate parallax, and simplify the sight picture (dot on target, shoot). If you allow your iron sights to clutter-up the optical sight picture, you're giving up some of these advantages for a single (and highly unlikely) reason; if your optical sight fails, you can immediately transition to the irons. In my opinion, that's not a good enough reason to clog up your more versatile primary sighting device.

    However, if you utilize a special mounting base to raise the EOTech slightly above the normal sighting plane, you get a less cluttered primary sight picture, and the irons lurking in the lower one-third or one-fourth of the EOTech's window; a trade-off that makes more sense in my mind. The irons are there if you need'em, but are not constantly blocking large chunks of the target and its immediate area 24/7 UNTIL you need them.
    Last edited by DJ Niner; 02-07-2007 at 03:17 AM.

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  3. #27
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    Well, I have seen that eotech mount. And, I understand that some people like to co-witness the sights. But, from my current experience with my PS90 and my eotech at 50 yards, I like seeing the entire target thru the window. I don't want the bottom portion blocked by the front sight.

    We'll have to see. There is a RRA AR with a flat top and quad rail for $1010 MSRP. There appears to be no rear sight at all on it. It may come down to what I can afford. I may end up having to buy that one and then altering the front sight later. We'll see. But, I'd prefer front and rear folding sights like the ones on that S&W tactical AR.

  4. #28
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    I think I'll wait and see how things go, but I might buy that RRA Car with the quad rail, and just change out the frontsight w/ gas block later. It would cost about the same as a riser for the eotech.

    I'll probably end up selling the USPc to pay for it.

    That will be cheaper than the S&W, and the S&W has a 7lb trigger - the RRA trigger should be better than that.

    We'll see if I still have the fever in a couple of months...

  5. #29
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    Wouldn't I be able to remove the front sight post and then buy a flat gas block to take its place. There would be no front sight, but it should work, right? Then, later on I can but some rail mounted folding sights when I have the $.

    I saw some gas blocks for $35 or so.

    Is this right?

  6. #30
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  7. #31
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    Quote Originally Posted by Shipwreck View Post
    Wouldn't I be able to remove the front sight post and then buy a flat gas block to take its place. There would be no front sight, but it should work, right? Then, later on I can but some rail mounted folding sights when I have the $.

    I saw some gas blocks for $35 or so.

    Is this right?
    There are a few methods of re-doing the front gas block..

    First, and lowest-buck, is to cut the one on there and grind it down, then re-blue. Not the prettiest, but not that big of a deal if you have the gas block underneath a handguard as it can't really be seen. This can also be done without removing the gas block at all if you're careful. Of course, with this method you won't be able to mount any fold-down sights to it. This is what I did on mine, as it just needed to be low enough to clear my extended rail.

    Second is to get an aftermarket clamp-on, or set-screw gas block. This will require removing the flashhider first, and then un-pinning the existing gas block to remove it. The caveat here is that both parts can be on extremely tight from the factory - and if you don't have a proper vise with a barrel clamping fixture it can be near impossible. My Bushmaster's flashhider, with it's crushwasher, was so tight I ended up having to Dremel the crushwasher away and munged up the stock flashhider too, but I didn't care as I was replacing it with a Vortex. (BTW, when looking for front fold-down sights to attach to a gas block, be aware that there are sights set for that height, and sights meant to go on top of a quad rail, which is typically higher than the mounting rail on a gas block, therefore the sight is shorter.. do your research before hitting "Order".)

    Third is to get an aftermarket gas block that is a pin-on type. You don't see as many of these for a reason - you have to re-drill indexing holes for the pins, and if they're just a hair off from the pin holes that are already there, you're pretty much screwed as you're not going to be able to drill new holes. Best used on a brand new barrel blank, and best left to the competent gunsmith.

    I'd recommend #2, and if you don't have the tools to do it cleanly, just find a smith to do it - it shouldn't cost much. My friends smith charges $10 -$20 for a gas block swap..
    Last edited by A_J; 02-07-2007 at 05:18 PM.

  8. #32
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    Quote Originally Posted by rfawcs View Post
    That's kewl, but I wanted 1 w/ a quad rail already on it. RRA has 1 that is simliar to that S&W.

    As for those other steps... That's confusing to a guy who never owned an AR before. I think I'll just have to either buy the S&W or live with that front sight in the way on the RRA :P

  9. #33
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    Quote Originally Posted by A_J View Post
    ...

    First, and lowest-buck, is to cut the one on there and grind it down, then re-blue. Not the prettiest, but not that big of a deal if you have the gas block underneath a handguard as it can't really be seen. This can also be done without removing the gas block at all if you're careful. Of course, with this method you won't be able to mount any fold-down sights to it.

    ...
    Bushmaster does make a fold-down front sight that goes around and over a milled (or hacksawed/ground down/cold blued ) front sight frame, clamping to the barrel. It's intended for add-on use on their V-Match flattop rifles/carbines, and was also used on their Modular Carbine. I had one for several years that came on a 25th Anniversary Modular Carbine, and had no problems with it at all. Info and mounted photo at link:

    http://www.bushmaster.com/shopping/bmas/yhm-9360k.asp

    Last edited by DJ Niner; 02-08-2007 at 03:26 AM.

  10. #34
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    Yes, I've seen sights for that. How hard is it to change the regular post out to this?

  11. #35
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    Quote Originally Posted by Shipwreck View Post
    As for those other steps... That's confusing to a guy who never owned an AR before. I think I'll just have to either buy the S&W or live with that front sight in the way on the RRA :P
    If you're anything like me it'll make a lot more sense once you have it in your hands and can see how it all goes together. Point is, if you go RRA, you won't have to live with it, there's options (like the above BM gas block with integral sight) and it's not that big of a deal to swap them if you do your research.

  12. #36
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    Well, I'm kinda going back and forth on it now... I can't afford anything this minute, so it doesn't matter...

    But, my PS90 does everything I want. It is majorly tricked out with everything I want. And, it's pretty much my dream rifle. I'm just wondering if I needa worry about getting another rifle.

    In reality, the ammo for an AR isn't that much cheaper. And, for me tos et one up like I want w/ another eotech is major bucks.

    I will get another chance to shoot an AR soon from someone I know. Guess I'll decide then.

    I may just concentrate on getting 1 more mag and just stocking up some extra 5.7 ammo....

    I'm losing my mind

  13. #37
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    Quote Originally Posted by Shipwreck View Post
    I'm losing my mind
    I thought you already lost it.

  14. #38
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    Quote Originally Posted by Todd View Post
    I thought you already lost it.
    Can ya lose sumthin ya aint never had????
    Last edited by scooter; 02-09-2007 at 12:22 PM.

  15. #39
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    Its starting already ... :smt118

    WM
    Never argue with drunks or crazy people.

  16. #40
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    Quote Originally Posted by Shipwreck View Post
    Yes, I've seen sights for that. How hard is it to change the regular post out to this?
    Actually, it is not designed to replace your current front sight frame; it's for guns with a milled or otherwise cut-down sight frame that need a front sight option. It fits around what's left of the original front sight frame's base, and over the gas tube. That way, if your gun is functioning correctly right now, you don't have to futz with a part of the gas system (front sight frame/base), which could compromise the gun's reliability, by changing-out the front sight frame for another one (which involves making sure it's straight so the gas port lines up correctly, it's secure enough not to move if bumped, etc.).

    Cut off the top of your old front sight frame, grind the top of the remaining gas-system-part-of-it smooth, contour it any way you'd like, cold blue the cut/ground area to prevent rust, then add this sight to get the fold-down ability.

    Bushmaster DOES offer a replacement fold down front sight and gas system, if that's what you want. It's offered with or without bayonet lug, IIRC.

  17. #41
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    OK, thanks. I have seen several replacement sights - just didn't know how hard it was to remove and replace. thanks.

  18. #42
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    Well, I am selling the Glock 34 and will be saving for a RRA, I think.

    I shot the G34 a few times today, and I am justs o hooked on my P99 that I don't like the Glock trigger.

    I'm keeping the HK too. While I do shoot the G34 a bit better than the USPc (the USPc also has a shorter barrel and sight radius), I like the trigger on the USPc more. And, I don't wanna sell both.

  19. #43
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  20. #44
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    I'll see your

    Quote Originally Posted by Charlie View Post
    and raise you a



    WM
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  21. #45
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    Funny guys :P

    I looked at a RRA at the local shop. Holding it still isn't as ergonomic at the PS90, so the PS90 will still be my fav rifle I think. But still, I want another

    I have a deal pending for the Glock, mags and the Glocklight alltogether.

    It will probably be Sept before I can buy the RRA, however. I still needa save...

  22. #46
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    Good luck, shoot the AR enough and ya might just change your mind about which one is 1st choice.....

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