New BUIS From LMT – Defense

I have always very much enjoyed the wider hood on the H&K sights and finally, Lewis Machine and Tool has stepped up to manufacturer a set of standard-height sights that fill the market void, but will leave your wallet equally void at a MSRP of $249.

Available in either 5.56 or .308 (same price for either), the aptly named BUIS Flip Up Sights are set up for built-it BDC on the rear sight adjuster. No word on materials or finish, but knowing LMT, its vastly over-engineered and over-built (which are concepts I am also a fan of).

Personal bet on Manganese Phosphate exterior over a 4140 steel base. Any takers?



Nathan S

One of TFB’s resident Jarheads, Nathan now works within the firearms industry. A consecutive Marine rifle and pistol expert, he enjoys local 3-gun, NFA, gunsmithing, MSR’s, & high-speed gear. Nathan has traveled to over 30 countries working with US DoD & foreign MoDs.

The above post is my opinion and does not reflect the views of any company or organization.


  • G0rdon_Fr33man

    HK drum diopter master race!

    • iksnilol

      If they just made the front post less wide it would be even nice for precise shooting.

      • Some Guy

        A new front sight post for G3 (and 416, I think) pattern front sights is like $10. I doubt it’d take too much effort to file yourself a narrow one.

        • iksnilol

          Wouldn’t that be illegal in service comps where the rifle is in issued condition? Or if the rifle is actually issued.

          • Some Guy

            Dunno, probably. For all I know HK could make a precision front sight post but they’d sell it to you for $600 because kraut space magic or something.

  • anon

    yeah these really are for H&K fans

    • Anonymoose

      At least they’re not the KAC regular flip-up sights.

  • JQPub

    Guess I’m used to a big-assed Ghost Ring rear sight of some sort. That peep sight isn’t really my thing. Right now I’m using the Troy DOA rear with a Troy M4 style front (with tritium) and think they are the best irons ever. Came out to about the same price, for reference.

  • Plumbiphilious

    Since I started with and subsequently prefer circle-in-a-circle diopter(?) sights, I like the concept (especially the BDC-capable rear), but the front sight is absolutely massive in terms of its outer ring wings. What the heck is the sight picture like for these things? It doesn’t seem to be dioptrical.

  • Nicks87

    $250! Wow, LMT I thought you were better than that.

  • Mike N.

    The rear sight looks very similar to the KAC 600m sight

  • tazman66gt

    so, are the wings on the front sight supposed to be for anti-aircraft? seems a bit overly wide to me.

  • The front and rear circle-in-a-circle sighting concept only has merit if the front sight post is fixed in the precise center of the front circle.

    With an adjustable front sight post, lining up twin circles doesn’t really help the shooter because the front post likely isn’t going to be in the center of the circle, with any given ammunition load.

    Perhaps this exaggerated sweep of the LMT sight wings is attempting to help circumvent this issue, while maintaining an adjustable front post?

  • Jeff S

    MSRP of $250 means a street price of?

  • Squirreltakular

    I think the Leitner-Wise E-sights are the new winners for BUIS. These look nice, though.