Apex Optic Mount for FNX-45 – ACRO/MPS* Optics

Steel optic mount for the FNX-45 Tactical. Converts the factory slide cut to accept Aimpoint ACRO P-1/P-2, Steiner MPS, and Lead & Steel Pandora PB-3 optics. Machined from billet steel with black oxide finish — eliminates the adapter plate gap and provides a direct, rigid mounting surface for closed-emitter pistol optics. Solves the fitment issue of ACRO/MPS footprints on the FNX-45 factory cut without requiring slide milling.

Compatibility

• FNX-45 Tactical (factory optic-cut models only)
• Aimpoint ACRO P-1
• Aimpoint ACRO P-2
• Steiner MPS
• Lead & Steel Pandora PB-3

Note: For Steiner MPS optics, Apex recommends using the Super Clamp to expand the clamping range.

Key Features

• Billet steel construction, black oxide finish
• Direct mount to factory FNX-45 Tactical slide — no adapter plate needed
• Includes optic plate mounting screws with thread locker pre-applied
• Replacement screws: short 5-40 threaded screws from factory FNX-45 Tac models are compatible
• Low-profile design maintains co-witness with factory suppressor-height sights (depending on optic deck height)

Install Difficulty

2/5 — Torque driver (15-18 in-lbs), blue Loctite (pre-applied on included screws), and a small flathead or pick for screw alignment. Remove factory cover plate, position mount, torque screws. No fitting required.

FAQ

Will this mount fit a standard FNX-45 (non-Tactical)?

No. This mount is specifically designed for FNX-45 Tactical models with the factory optic cut. Non-Tactical slides require slide milling.

Can I use this mount with a Trijicon RMR or Holosun 407C/507C?

No. This mount is cut for the ACRO/MPS footprint only. RMR/Holosun pattern optics require a separate adapter plate or direct milling.

Do I need to remove the extractor or disassemble the slide to install?

No. Remove the factory cover plate, clean the mounting surface, apply the mount with the included screws, and torque to spec. No slide disassembly required.

Shipping: In stock and ships within 1-2 business days. Warranty: Apex Tactical covers manufacturing defects. This is a precision steel component — inspect for fitment before applying thread locker.