The Reptilia RMU Mount is a Picatinny riser that raises a fixed-height optic by 0.625in, made for the EOTech holographic range, the Vortex AMG UH-1 and the Sig ROMEO8T.
Some optics do not come apart from their mount. This raises the whole thing instead — 0.625in, in three lengths.
Reptilia built the RMU at the request of a DoD customer. Machined from billet 7075-T6 aluminium with a Milspec Type III hard anodised finish, it sits between the rail and the optic and adds 0.625in of height, keeping a spring-loaded nitride steel clamp and mounting bolt with the same low-profile, anti-snag shape as the rest of the Reptilia range.
Choose the slot count to match the footprint your optic occupies: 6 slots at 77.7 g (2.7 oz), 9 slots at 95 g (3.4 oz), or 12 slots at 109 g (3.8 oz). A holographic sight with an integral base cannot be re-mounted onto a taller mount, so raising the whole assembly is the only way to get a head-up position under night vision or with a helmet. Made in the USA.
Why shooters choose the RMU Mount 0.625"
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Adds 0.625in of height — for optics whose mount is part of the optic and cannot be swapped
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Three lengths — 6-slot at 77.7 g, 9-slot at 95 g or 12-slot at 109 g, to match the optic's footprint
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Built for a DoD request — designed around EOTech, Vortex AMG UH-1 and Sig ROMEO8T sights
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Billet 7075-T6 aluminium — Milspec Type III hard anodised, with a spring-loaded nitride steel clamp
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Anti-snag profile — clamp and mounting bolt sit flush with the body, as on the rest of the range
What the RMU Mount 0.625" fits
Fits any M1913 Picatinny rail and accepts any optic that clamps to Picatinny — Reptilia designed it around the EOTech holographic range, the Vortex Optics AMG UH-1 and the Sig Optics ROMEO8T, all of which carry an integral base. Choose the slot count so the riser is at least as long as your optic's own clamp: 6, 9 or 12 slots. All three are Black. This is a riser for a whole optic assembly, not a magnifier riser — to raise a 3x or 6x magnifier so it lines up behind a 1.93in dot, use the RMU Mount 0.39in for magnifiers instead.
Specifications
| Platform |
AR-15 / M4 |
| Fits |
EOTech holographic sights, Vortex Optics AMG UH-1, Sig Optics ROMEO8T — on any M1913 Picatinny rail |
| Type |
Picatinny optic riser — adds 0.625in (15.9 mm) of height |
| Material |
Billet 7075-T6 aluminium; nitride steel clamp |
| Finish |
Milspec Type III hard anodised — Black |
| Weight |
6-slot 77.7 g (2.7 oz) · 9-slot 95 g (3.4 oz) · 12-slot 109 g (3.8 oz) |
| Mount interface |
Spring-loaded clamp to M1913 Picatinny, rail on top |
| Made in |
USA |
| Brand |
Reptilia |
| MPN |
100-271 · 100-270 · 100-269 |
Raise the optic you cannot re-mount. Order the RMU Mount 0.625" today — in stock at Xtreme Tactical Gun Parts with free tracked UK delivery in 7–10 days.
Explore more: AR-15 Parts & Accessories, Scope Mounts & Optic Risers or browse all Reptilia.
