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Lakeline LLC

RMSC Mount Plate for TX22 Competition - Shield RMSC, Romeo 0, Holosun 407K/507K

$19.95
(7 reviews) Write a Review
SKU:
TXT-MP-432-P
UPC:
8.10142E+11
Availability:
Ships same business day if ordered before 3pm Central Time, or next business day
Adding to cart… The item has been added

Composite mount plate for RMSC-sized sights (Shield RMSC, Sig Romeo 0, Holosun 407K/507K, and compatible) on the TX22 Competition. No excess width. Factory screws used for mounting. Available at Lakeline LLC, a US Navy Veteran-Owned and Osage Nation Tribe Member-Owned dealer in Houston, TX. No FFL required for this item.


Specifications

Core Specs

SpecValue
BrandLakeline LLC
SKUTXT-MP-432-P
UPC810142071451
CategoryOptic Mounts & Accessories
Caliber22 LR
Optic FootprintRMSc
Country of OriginMade in the USA

Installation

SpecValue
Installation DifficultyEasy.

Legal & Policies

SpecDetail
FFL RequiredNo - this is an accessory/part, not a complete firearm
Return Policy30-day return policy
ShippingFree ground shipping on orders over $150, multiple options at checkout

Product Description

The RMSC Mount Plate for TX22 Competition - Shield RMSC, Romeo 0, Holosun 407K/507K is designed and manufactured in-house by Lakeline LLC in Houston, TX. Made in the USA. As a US Navy Veteran-Owned and Osage Nation Tribe Member-Owned company, Lakeline builds its own parts and upgrades rather than reselling generic aftermarket components, giving us direct control over fit, finish, and quality.

Backed by Lakeline Lifetime Limited Warranty, this part is built to the same standard we'd want on our own firearms.


Why Buy From Lakeline LLC

Lakeline LLC is a US Navy Veteran-Owned, Osage Nation Tribe Member-Owned company based in Houston, TX.

  • Free ground shipping on orders over $150, multiple options at checkout
  • 30-day return policy

Questions? Email us at info@lakelinellc.com.


Frequently Asked Questions

Does the RMSC Mount Plate for TX22 Competition - Shield RMSC, Romeo 0, Holosun 407K/507K require an FFL to purchase?

No. This is an accessory/part, not a complete firearm, so it ships without an FFL transfer.

How difficult is it to install the RMSC Mount Plate for TX22 Competition - Shield RMSC, Romeo 0, Holosun 407K/507K?

Easy.

Does the RMSC Mount Plate for TX22 Competition - Shield RMSC, Romeo 0, Holosun 407K/507K come with a warranty?

Yes - Lakeline Lifetime Limited Warranty.

What is the return policy on the RMSC Mount Plate for TX22 Competition - Shield RMSC, Romeo 0, Holosun 407K/507K?

30-day return policy

Lakeline Lifetime Limited Warranty

7 Reviews Hide Reviews Show Reviews

  • 5
    RSMC Mount plate for Taurus TX-22 Comp.

    Posted by John Schissel on 2nd Jun 2026

    Looks good. Fits good. Easy to install. Arrived quickly. Just buy one! You wont be disappointed!

  • 5
    Composite Sight Mounting Plate for RMSC sized sights on the TX22 Competition

    Posted by Roger Eric Barker on 5th Feb 2025

    This mounted easy and was a perfect fit. I recommend using this product on TX-22

  • 5
    Solved my problem

    Posted by Pearson Eastham Jr. on 15th Aug 2024

    So, I bought a micro red dot for my TX22 Comp to reaslizing there was no factory way to mount it properly. I originaly rigged it but didn't feel good about the install. Came acrosxs this gem. It worked perfectly. It does seem to be 3d printed, but durable. It fits great and the design on the bottom of the hex nuts holding the screws in was bnrilliant. This should hold up nicely and was the perfect solution to my $200 mistake. All is well for a $20.0 0 fix. Thank you Lakeline!

  • 3
    RMSc adapter plate for TX22 Competition?

    Posted by Les Schultz on 17th Sep 2023

    I was real excited about this. Shipping was quick. Upon receipt, I quickly noticed the lack of recoil lugs - the main difference in optic footprints and the reason adapter plates are made. I should have looked closer at the picture. Well I have it now and mounted it. Haven’t shot the TX since putting it on, but will see if it loosens over the next few range visits. If it holds fast, then I’ll mount the optic and see if it stays in place. If over the course of a few range trips it holds, I’ll change my rating. The “composite” material is a lot softer than I expected. It’s not a laminated composite, so I’d say it’s a hard plastic. We’ll see. Time will tell.

  • 5
    Perfect for RMSC RDS

    Posted by Meech on 31st Aug 2023

    Nice clean fit on TX22 Comp for the smaller RDS like Romeo Zero and accommodates shroud. Do not over torque while securing this plate to barrel. The plastic material is soft. Recommend not to exceed 15 in/lbs.

  • 5
    TX22 Competition Mounting Plate for RMSC

    Posted by Michael A on 10th Aug 2023

    The Reflex Sight adapters that came with the TX22 Competition Conversion Kit did not accommodate the Holosun 507K. LAKELINE in for the save. Perfect fit.

  • 5
    Works great!

    Posted by Jason on 31st Mar 2023

    I was a little skeptical about this being plastic but the plastic is a very high quality. It fits the pistol well and looks better in my opinion.