Red Dot Optic (RDO) Replacement Parts

Langdon Tactical
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LTT's Red Dot Optic Replacement Screw Accessory Kit works with the LTT RDO solution only! This will not work on factory cut pistols.

Please choose carefully, as the screw lengths for RMR/Holosun, HE509T, DPP/Romeo, Doctor Optic, & Holosun EPS are different, and each kit includes different items! When selecting Two Replacement T-Nuts only,  it does not come with any bits or screws, make sure you select NONE under RDO Screw Type.

The Screw Kit includes:

  • Thread Locker
  • (3) Metric - Plate to Slide Screw: M3 x 0.5mm, 6mm Long
  • (2) Short - Holosun to Plate Screw: 4 x 40 5/16 (non-metric)
  • (2) Long - RMR To Plate Screw: 4 x 40 3/8 (non-metric)

The T-Nut Kit includes: 

  • Two (2) LTT RDO T-Nuts (from C&H Precision) 

The Screw and T-Nut Kit includes:

  • All of the above 

Please choose the correct screws for your RDO Optic Plate: 

  • Trijicon RMR Footprint:  Fits the Trijicon RMR, SRO, and Holosun 407c, 507c, 508T family of optics
    • For attaching a Holosun to the RDO Plate use:  4x40 – 5/16
    • For attaching an RMR or SRO to the RDO Plate use: 4x40 – 3/8
  • Holosun 509T: does not require mounting screws from us. 

  • Doctor Optic: Doctor to RDO Plate use: 4x40 - 3/8 or 4x40 - 5/16

  • Delta Point Pro: Delta to RDO Plate use: 4x40 - 1/2

  • Holosun EPS: EPS to RDO plate use: 4x40 - 5/16

TORQUE SPEC: Torque screws to 12in/lbs

DISCLAIMER: We recommend that this product as well as all other firearms parts & kits sold by Langdon Tactical be installed by a competent pistolsmith. No liability is expressed or implied for ANY damage or injury which may result from improper installation or use of this product. Installation of any firearm parts may limit or void the manufacturers warranty. We strongly recommend that the safety and operation of your modified handgun be thoroughly checked by an accredited gunsmith prior to use.

Please torque your screws to 12in/lbs

WHAT MAKES THE LOW RDO FROM LTT DIFFERENT?

Langdon Tactical’s Low RDO is a game changer when it comes to mounting a red dot on your 92/M9/96 Series gun as low as possible.

Introduced in 2020, LTT’s 92 RDO solution quickly set the standard in pistol optics. Our patented solution includes a full redesign of the internal components of the 92/96 series pistol in order to properly low-mount the optic. With a dot height of just .85 above the centerline of the bore (with a Trijicon RMR), it is one of the lowest mounting systems for any pistol and THE lowest for the 92 series of pistols. This allows the shooter a natural point of aim, a more secure mounted plate and optic, and a lighter operating system for the gun as it cycles. LTT’s proprietary plate sits farther back on the slide when compared to other 92 RDO solutions on the market, allowing for optics like the Trijicon SRO and RMR HD to NOT hang over the breach face and interfere with the ejection pattern of brass. Further, the lower, lighter plate is more secure with three mounting screws and proper thread engagement. 

The LTT Beretta 92 LOW RDO Solution is patented in the US as of May 2023.

For more information on RDO Mounting Footprints, please click this link: Optics Info 

WHAT IS THE LTT REAR SIGHT FORWARD (RSF) OPTIC PLATE?

LTT is proud to offer a limited selection of our optics footprints in a rear sight forward (RSF) configuration. Having the rear sight in front of the optic window decreases visual clutter, making it easier to remain focused on the target during the shooting process. Placing the rear sight forward of the optic also means that you can see the dot in 100% of the window, because none of your view of the optic is obstructed by the rear sight. Finally, the RSF configuration can help keep the front lens of your optic clean by deflecting some of the carbon, gas, and debris that exits the chamber away from the lens.

Looking for replacement screws? You can find them here.

NOTE: These plates will not fit on the Beretta M9A4 or 92X RDO solutions AS IT COMES from Beretta. These will only work with LTT’s proprietary RDO solution. 

Sorry, We Cannot Accept ANY Returns on RDO Plates.

For more information on RDO Mounting Footprints, please click this link: Optics Info 

Please reference our Terms & Conditions. Due to the complexities of complying with the Federal warranty law, Langdon Tactical Technology, Inc. does not offer a written warranty. We continue to stand behind our products and services, and to care for our customers, but we cannot make guarantees or warranties of any kind. This general statement of policies and disclaimers is effective January 1, 2016.