How to Mount your Optic (Optic Ready Slides ONLY)

Optic ready pistols come with the cover plate pre-installed and torqued at the factory.  We use medium strength blue Locktite on the screws, but they can be removed with hand pressure and a typical hand tool.

Screws require a torx T-10 driver and should be torqued to approximately 10 inch pounds.  If you do not have a torque wrench and are using a typical hand tool, most people describe this as “very snug, but not excessively tight.”

Medium strength blue Locktite is recommended for mounting screws but is optional.  If you choose not to use Locktite, we recommend re-torquing screws periodically and after every range session.  Loose screws can cause zero shift.  If many rounds are fired with the optic loose, thread damage could result.

Your pistol will come with a total of 5 screws.  THE SCREWS ARE DIFFERENT SIZES.  Please note the following:

  1. Cover Plate Mounting: Use 2x 1/4 inch long screws.
  2. Trijicon RMR Mounting:
    1. 1x 5/16 inch long screw goes on the EJECTION PORT SIDE
    2. 1x 3/8 inch long screw goes on the NON-EJECTION PORT SIDE (we add the 3/8 inch screw to maximize the strength of the mount as there is space for it when mounting the RMR. However, a 5/16 screw will also provide adequate strength).
  3. Holosun 507c Mounting
    1. Use 2x 5/16 inch screws.

Call us if you need replacement screws.

6 Replies to “How to Mount your Optic (Optic Ready Slides ONLY)”

  1. Alex Beckworth says:

    I’m trying to mount a plate for a vortex venom on my Kimber KHX Custom, and the stock screws that hold the stock sight plate are too tall to fit under the venom sight. Will your countersunk 1/4” screws thread into my Kimber slide?

    1. JESSICA@SHADOWSYSTEMSCORP.COM says:

      Hi Alex, I wish we could help but we don’t know the thread specifications for the Kimber.

  2. Marlin Begalke says:

    Will vortex or holosun optic fit right in the 918, the dimensions seem the same but I’m unsure and want to know more before buying the optic.

    1. JESSICA@SHADOWSYSTEMSCORP.COM says:

      The MR918 can fit an RMR or SRO from Trijicon and a 507c or 508t from Holosun. Unfortunately, the Vortex does not fit the MR918. However, the MR920 will accommodate the Vortex and other brands.

  3. Trung says:

    Will I require a sealing plate with my RMR?

    1. JESSICA@SHADOWSYSTEMSCORP.COM says:

      Yes, you’ll likely want to use one. Without the sealing plate water, oil and debris can get under there.

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