What Optics Fit a Glock 43 RMSc Cut Slide? A 2026 List
Posted by 3CR Tactical on 4th May 2026
The Glock 43 RMSc cut slide accepts a specific footprint of micro red dot — the Shield RMSc pattern — and not every sub-compact optic fits it. If you're building a Glock 43 or 43X with an optics-ready slide, here's what actually mounts directly without an adapter plate, plus the screw spec you'll need on hand before you start.
What is the RMSc footprint?
RMSc stands
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AR-15 Buffer Tube Sizes: Mil-Spec vs Commercial
Posted by 3CR Tactical on 28th Apr 2026
Why Buffer Tube Size Matters
Mil-spec and commercial AR-15 buffer tubes look nearly identical but use different diameters. That difference determines which stocks fit your rifle and how solid the lockup feels. Buy the wrong one and your stock will either wobble or refuse to slide on at all.
What Is the Actual Size Difference?
A mil-spec buffer tube has an outer diameter of 1.14
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What Does a Window Cut Slide Do for Glock?
Posted by 3CR Tactical on 28th Apr 2026
The Basics of a Window Cut
Window cut slides are one of the most common aftermarket slide styles for Glock pistols. They look aggressive, but the real question is whether those cutouts do anything functional. The answer is yes — but with trade-offs.
A window cut is a rectangular or angled port machined through the top of the slide. It exposes part of the barrel and remove
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