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 10mm flat head screws (T10 torx)
• (1) Installation instructions card

Plan to use this mount with a SIG Sauer red dot?
If so, you will need to order these longer screws.

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 RMS2
• Shield RMSc
• Shield RMSd
• Shield RMSw
• Shield RMSx
• Shield SMS
• Shield SMS2
• Shield SMSc
• SIG Sauer ROMEO-X COMPACT
• SIG Sauer ROMEOZero
• SIG Sauer ROMEOZero 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 are the mounts 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 me to keep the price low. PA12 nylon is sufficiently strong 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 and will it hold zero?
A: Yes, LowPro mounts are very durable. The original production unit installed on my Ruger Mark IV 22/45 LITE pictured in the product photos has seen 10,000+ rounds and is still holding zero.

Q: How are the mounts made?
A: The mounts are additively manufactured on an industrial-grade 3D printer. The strength, quality, and surface finish is comparable to injection-molding.

Q: Where are the mounts made?
A: The mounts are designed by me, a mechanical engineer, and manufactured in Michigan.

Q: Where do the mounts ship from?
A: The mounts ship from my home in Atlanta, GA.

Q: Will I be able to co-witness the stock iron sights using this mount?
A: No. Even though LowPro mounts are the lowest profile red dot mounting plates on the market, you still won’t be able to co-witness the stock iron sights. However, some customers have reported being able to co-witness with taller, aftermarket front sights from Dawson Precision.

Q: Are the mounts compatible with TacSol Pac-Lite uppers?
A: Yes. LowPro mounts are compatible with TacSol Pac-Lite uppers. However, please note that TacSol Pac-Lite uppers have #6-40 threaded holes and Ruger uppers have #6-48 threaded holes. Therefore, you must order these screws if you plan to attach a LowPro mount to a TacSol Pac-Lite upper.