The Reptilia DOT Mount is a one-piece Picatinny optic mount for the Trijicon MRO, holding the optic at Reptilia's 39mm lower 1/3 height, which the trade lists as 1.54in bore height.
The MRO at the classic co-witness height, on 1.5 oz of billet aluminum with nothing in it that adjusts.
Machined from billet 7075-T6 aluminum with a Milspec Type III hard anodized finish, the DOT Mount attaches to any M1913 Picatinny rail and offers lower 1/3 co-witness with standard AR-15 back-up iron sights. Its spring-loaded nitrided steel clamp and mounting bolt sit flush with the body of the mount for a low-profile, anti-snag design, and mounting screws and a hex key are included.
39mm is Reptilia's own figure and comes out at 1.535in, which is why dealers list it as 1.54in bore height — the same mount, quoted two ways. At that height the MRO's large window sits over your irons rather than in front of them, so an AR-15 keeps a usable backup without a taller mount and a taller cheek weld. Made in the USA.
Key Features
- 39mm / 1.54in bore height: Lower 1/3 co-witness with standard AR-15 back-up iron sights
- Cut for the Trijicon MRO: One footprint, mounted direct, with no adapter plate under the optic
- 1.5 oz (43 g): Billet 7075-T6 aluminum, Milspec Type III hard anodized
- Spring-loaded steel clamp: Nitrided steel, flush with the body, nothing protruding to snag
- Fitting kit included: Mounting screws and a hex key come in the box
Compatibility & Fitment
Fits the Trijicon MRO, on any M1913 Picatinny rail including the flat-top upper of an AR-15. Footprint and height are both fixed: MRO footprint, Reptilia 39mm (1.54in) lower 1/3 height. If you want the head-up sightline instead, the 1.93in MRO DOT Mount is the same footprint at the taller height. An Aimpoint Micro, ACRO or RMR uses a different pattern and will not fit this mount.
What's Included
- DOT Mount
- Mounting screws
- Hex key
Technical Specifications
Platform | AR-15 / M4 |
Fits | Trijicon MRO, on any M1913 Picatinny rail |
Type | One-piece red dot mount — 39mm (1.54in) lower 1/3 bore height |
Material | Billet 7075-T6 aluminum; nitrided steel clamp |
Finish | Milspec Type III hard anodized — Black Anodized |
Weight | 1.5 oz (43 g) |
Mount interface | Spring-loaded clamp to M1913 Picatinny |
Made in | USA |
Brand | Reptilia |
US Shipping & Support
Shipped from D&R Sports Center in the USA with fast, tracked delivery. Questions on fit, mounting or which model suits your setup? Our team is glad to help before and after your purchase.
Frequently Asked Questions
What is 39mm in inches?
39mm is Reptilia's published figure and equals 1.535in, which dealers round to 1.54in bore height. It is the lower 1/3 co-witness position: standard AR-15 back-up iron sights appear in the bottom third of the optic window instead of across the center of it.
Is this the same mount as the 1.93in MRO version?
Same footprint, different height, and neither converts into the other. This is the lower one, for a conventional cheek weld and a co-witness. The 1.93in version raises the sightline for a head-up position, a helmet or night vision. Choose on height, since the optic interface is identical.
Does it come in Flat Dark Earth?
Not in this listing. Reptilia's lower 1/3 MRO mount is offered in this listing in Black Anodized only. The 1.93in MRO mount is available in both Black Anodized and Flat Dark Earth Anodized if color matters more to you than height.
What is in the box?
The mount, its mounting screws and a hex key. Fit it firmly with the supplied key, check by hand that the mount does not move on the rail, and confirm your zero after the first range session as you would with any mount that has just gone on.
