HK MP5, MP5K, G3, HK416 RMR Picatinny Riser – Co-Witness – Meprolight

Meprolight Co-Witness Picatinny Riser for RMR Footprint Optics

The Meprolight RMR Picatinny Riser mounts a compatible RMR footprint optic to a Picatinny rail. Its elevated mounting platform supports alignment with standard AR-height iron sights when paired with a suitable optic. Machined aluminum construction and squared recoil stops provide a secure mounting platform.

Includes:

• RMR Picatinny riser
• T10 tool and 3 mm hex wrench
• Two 6-32×9 screws
• Two 4-40×7.2 screws

Specifications:

• Optic interface: RMR
• Rail interface: MIL-STD-1913 Picatinny
• Profile: Co-witness
• Material: CNC-machined 6061-T6 aluminum
• Finish: Matte black anodized
• Manufacturer part number: 901141045

Compatible With:

Requires a standard RMR footprint optic. The firearm configurations below require sufficient rail space and clearance for the riser and optic.

Models with a factory Picatinny optic rail:

• HK416, MR556
• HK417, MR762
• HK416 .22 LR
• MP7
• G36K, G36C with a factory Picatinny top rail

Models requiring an added Picatinny optic rail or mount:

• MP5, SP5 – HKP raised Picatinny rail, HKP-21601
• MP5K, SP5K, SP89 – UTG PRO extended Picatinny claw mount, HKP-21606
• HK94, HK91, G3, HK33, HK53, HK93 – MFI windowed Picatinny mount, HKP-02708
• MP5 .22 LR – MFI dedicated .22 LR optic mount, HKP-02389
• UMP, USC without a Picatinny top rail – HKP enhanced Picatinny top receiver rail, HKP-14541-BL
• G36, G36K, G36C, SL8 without a Picatinny top rail – Picatinny optic rail with fixed sights, HKP-19717; requires three mounting hardware sets, sold separately
• MSG90, HK21E, HK23E – Michaels Machines Picatinny optic mount, HKP-01923

Please note: Co-witness alignment depends on the optic, iron sights, and receiver rail height; it is not guaranteed on every listed firearm. Optic, additional receiver rails, and separately required mounting hardware are sold separately.