The Reptilia DOT Mount is a one-piece Picatinny optic mount for the Aimpoint ACRO and Steiner MPS, holding the optic at Reptilia's 39mm lower 1/3 height, listed by the trade as 1.54in bore height.
Cut for the ACRO footprint and set at one height. There is no dial, no spacer and no adapter plate — which is the entire point.
Machined from billet 7075-T6 aluminium in Type III hardcoat anodising, the DOT Mount clamps to any M1913 Picatinny rail with a spring-loaded nitrided 4140 steel clamp. Clamp and bolt sit flush with the body for a low-profile, anti-snag shape, and the assembly weighs 57 g (2.0 oz).
At the 39mm height, standard AR-15 back-up iron sights appear in the lower third of the ACRO's window, so the irons are available without covering the sight picture. The ACRO's enclosed emitter is the reason a lot of shooters choose it in British weather — nothing can bridge the emitter and the lens because the housing is sealed — and a mount with a single fixed interface keeps that reliability argument intact. Made in the USA.
Why shooters choose the Lower 1/3 DOT Mount for Aimpoint ACRO
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ACRO footprint — cut for the Aimpoint ACRO P1, P2 and C2 and the Steiner MPS, with no adapter plate in the stack
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39mm / 1.54in bore height — lower 1/3 co-witness with standard AR-15 back-up iron sights
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Spring-loaded steel clamp — nitrided 4140 steel, flush with the body, nothing proud to snag
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57 g (2.0 oz) — billet 7075-T6 aluminium, Type III hardcoat anodised
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One-piece body — fewer joints between the optic and the rail, so fewer places for zero to move
What the Lower 1/3 DOT Mount for Aimpoint ACRO fits
Fits the Aimpoint ACRO P1, ACRO P2 and ACRO C2, and the Steiner MPS — any red dot using the ACRO footprint — on any M1913 Picatinny rail, including the flat-top upper of a UK straight-pull AR-15. Footprint and height are both fixed: ACRO footprint, Reptilia 39mm (1.54in) lower 1/3 height. If you want the tall head-up sightline instead, the 1.93in ACRO DOT Mount is the same footprint higher up, and the low-height ACRO DOT Mount goes the other way for subguns and gas-tube AK rails. An Aimpoint Micro will not fit this mount.
Specifications
| Platform |
AR-15 / M4 |
| Fits |
Aimpoint ACRO P1, P2 and C2; Steiner MPS — on any M1913 Picatinny rail |
| Type |
One-piece red dot mount — 39mm (1.54in) lower 1/3 bore height |
| Material |
Billet 7075-T6 aluminium; nitrided 4140 steel clamp |
| Finish |
Type III hardcoat anodised — Black, Flat Dark Earth Anodized |
| Weight |
57 g (2.0 oz) |
| Mount interface |
Spring-loaded clamp to M1913 Picatinny |
| Made in |
USA |
| Brand |
Reptilia |
| MPN |
100-026 · 100-027 |
An enclosed-emitter dot at the co-witness height, on one machined part. Order the Lower 1/3 DOT Mount for Aimpoint ACRO 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.
