Drops on Glock 43 and Glock 43X frames — single-stack 9mm. Built up and ready to install on a stripped factory frame. Combat-style front and rear serrations for positive grip, a top window cut for a touch of flair and slight weight reduction, and an RMSc-pattern optic cut for Shield RMSc, Holosun K-series (407K / 507K), and other RMSc-footprint micro red dots. The 1/2x28 threaded barrel lets you run a compensator, muzzle brake, or other 1/2x28 muzzle device.

What's installed:

• Black combat slide — RMSc optic cut + top window cut
• Black nitride threaded 9mm barrel (1/2x28) for Glock 43 / 43X — knurled thread protector included
• 3CR Tactical slide completion kit installed
• Tall (suppressor-height) polymer sights installed — co-witness compatible with most RMSc red dots

Specs:

• Fit: Glock 43 and Glock 43X frames (9mm single-stack)
• Serrations: Combat — front and rear
• Optic cut: RMSc footprint — flat cut, no locating bosses
• Sight cut: Glock-pattern dovetails
• Barrel: 9mm black nitride, threaded 1/2x28, drop-in Glock 43 pattern — thread protector included
• Top: Window cut (decorative)

Verify your frame is a Glock 43 or 43X (they share barrel dimensions) before assembly. Cycle the slide on the frame several times to seat the rails before live fire. The RMSc cut is machined flat with no locating bosses — torque the optic's mounting screws to the optic maker's spec and use a recoil-grade thread locker.

Threaded barrel note: The barrel is threaded 1/2x28 and ships with a knurled thread protector installed; a muzzle device is not included. Compensators, muzzle brakes, and suppressors are regulated in some states and municipalities — confirm your local and state law before installing any muzzle device.

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