LowPro™ Low-Profile RMSc Red Dot Mount for Ruger Mark I/II/III/IV

• At only 2mm (0.08") thick, this is the lowest profile mount on the market and is less than half the thickness of alternative mounting plate options
• Made in the USA out of durable and lightweight PA12 nylon
• Alignment pins keep red dot secure and zeroed

• (1) LowPro™ RMSc mounting plate
• (2) #6-48 x 1/4" flat head screws (T10 torx)
• (2) #6-32 x 8.7mm flat head screw (T10 torx)
• (1) installation instructions card

Compatible firearms
Compatible with all Ruger Mark series pistols (I, II, III, and IV) except for the Mark IV 22/45 Tactical Silencer Shop Exclusive (40179, 40181, & 40182) and the Mark IV 22/45 LITE with Riton red dot (43947)

Compatible red dots
Compatible with any red dot that uses an RMSc footprint including, but not limited to:

• ADE RD3-018 Spike
• ADE RD3-021 Nuwa
• ADE RD3-021 Nuwa Pro
• ADE RD3-028 Ares
• ADE RD3-030 Apollo Pro
• ADE SPIKE
• Arken HALO MSR
• Bushnell RXC-200
• Bushnell RXU-200
• C-More CRC
• Crimson Trace RAD Micro
• Crimson Trace RAD Micro Pro
• GPO Spectra Pistol Dot
• Holosun 407K X2
• Holosun 507K X2
• Holosun EPS Carry
• Holosun EPS Carry MRS
• JP Enterprises JPoint
• JPoint Micro Reflex Sight
• Riton MPRD 2
• Riton X3 Tactix MPRD 2
• Shield AMS
• Shield RMS
• Shield RMS 2
• Shield RMSc
• Shield RMSd
• Shield RMSw
• Shield RMSx
• Shield SMS
• Shield SMS 2.0
• Shield SMSc
• Sig Sauer Romeo X Compact
• Sig Sauer Romeo Zero
• Sig Sauer Romeo Zero Elite
• Sightmark Mini Shot A-Spec M3
• Swampfox Sentinel
• Swampfox Sentinel II
• UTG OP3 Mini Micro for RMSc
• Vector Optics Frenzy-S
• Vortex Defender CCW

LowPro RMSc Mount Installation Card

LowPro Mounts Installation Video

Q: Why is the mount made of out of PA12 nylon instead of aluminum?
A: LowPro mounts are made out of PA12 nylon because it is durable, chemical resistant, lightweight, and lower cost which allows us to keep the price low. PA12 nylon is sufficiently strong enough for rimfire firearms, especially the Ruger Mark I/II/III/IV pistol because the red dot is mounted to a barrel that doesn’t reciprocate.

Q: Is the mount durable?
A: LowPro mounts are very durable. The original production unit installed on the Ruger Mark IV 22/45 LITE pictured in the product photos has seen 3,000+ rounds over the past 6 months. It was used competitively by owner, Derek McCurry, in Steel Challenge matches without any issues and the red dot has remain zeroed without the need for adjustment. Additionally, our 10 beta testers haven't reported any issues.

Q: Where are the mounts made and where do they ship from?
A: The mount was designed by owner, Derek McCurry, who lives in Atlanta, GA. They are manufactured by our production partner in Michigan and ship from Atlanta, GA.

Q: Is the mount compatible with TacSol PAC-LITE uppers?
A: Yes, the LowPro mount is compatible with TacSol PAC-LITE uppers, with one exception. TacSol uppers have the same threaded hole spacing as Ruger uppers, however, they use #6-40 threads instead of the standard #6-48 threads. Therefore, the provided #6-48 x 1/4" screws will not work and you will need to source your own #6-40 x 1/4" screws to attached the LowPro mounting plate to your TacSol upper. I've been told that TacSol will ship you some for free if contact them.