20 March 2026

Form Over Function

I have had a KAC 600m folding sight on Kaylee since I first changed her over to a flat-top.

Over time she has become, more and more, an M4 clone.

The issue back-up sight for an Army M4 is a Matech BUIS.

I have finally gotten one!

With an M9 bayonet, because Army clone.

Folded:

Deployed at 200m:

Deployed at 600m:

The Matech BUIS is not known for its durability, but it is the correct rear sight for the clone, so...

It's a little heavier than the KAC, 3.4 oz. vs 2.0 oz.

The range adjustments are way easier to see, though.

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