gas blocks and sights

Discussion in 'AR-15 Discussion' started by JonM, Dec 13, 2011.

  1. JonM

    JonM Moderator

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    ok im in the planning stages for a lightweight reddot centered midlength carbine type rifle.

    its mainly going to be parts from rra and magpul plus possibly a full auto bcg depending on if i get my sherrif letter or not.

    anyway rra has a gas block with integrated flip up sight. i like the magpul mbus as they are light stay out of the way and cheap and they just plain work. i would prefer using the magpul front rear setup but i cant find a simple rail height gas block that doesnt have funky features or cost a ridiculous ammount.

    the rra flip up is an option if anyone has opinions of it or a suggestion of a decent quality reasonably rail height gas block in the ~45$ range
     
  2. FCross7

    FCross7 New Member

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    The MBUS won't work on a railed gas block anyhow. The picatinny on them sits lower than the picatinny on the receiver, so you have to get a gas block specific flip up sight.

    Why not do a low profile gas block with something like a Troy TRX Extreme or Samson Evolution handguard? They give you the picatinny rail along the top and are very lightweight.

    -Fred
     

  3. JonM

    JonM Moderator

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    i dont need a full rail and i really like the moe handguards :) i just found that midwest industries makes a reciever height block but i dont know how good their quality is on ar15 parts. but its also half again as much as i wanted to pay *sigh*

    troy is pricey and i dont really want a full rail on this build.

    i may just go with a yhm integrated block and sight as i dont like all the sling swivels on the rra sight/block. plus one of the yhm's has a bayonet lug.
     
    Last edited: Dec 13, 2011
  4. mjkeat

    mjkeat New Member

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    An A2 FSP is always an option.
     
  5. JonM

    JonM Moderator

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    the barrel i want has a a2 fsb but i dont want it in the way of the optic.
     
  6. mjkeat

    mjkeat New Member

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    I had one one my LWRC w/ a EoTech and a BCM w/ an H1 and when looking through the optic it's not noticeable. I have gone to longer rails simply because it fits my grip style better.
     
  7. willfully armed

    willfully armed New Member

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    Jon. Why does the sheriff matter on installation of a FA BCG on a semi auto rifle?
     
  8. JonM

    JonM Moderator

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    Cuz if i get it the upper is gonna be mated to a full auto colt m16 lower. It may change barrel plans too. Been tossing around the idea of a compact suppressed 30 cal too. Either way its still gonna need a light weight fsb/sight.

    If i dont get it then i gotta sell the m16 and i pretty much got a huge blank check type budget at that point. But i still want to keep the cost reasonably low.
     
  9. JonM

    JonM Moderator

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    Putting one of those vortex sparcs on it. Im pretty impressed with the strikefire. I got that for my mp 15-22 but i had it on my socom this weekend and its going for round two this coming saturday
     
  10. jwsturr

    jwsturr New Member

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    you could chop the top of the sight off. Or have Adco do it for $38.
     
  11. JonM

    JonM Moderator

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    I can remove it myself :) i know the m16/ar15 platform pretty well. I dont want to mutilate a perfectly good fsb when it really needs a different gas block