Description
The Magpul MBUS Pro Sight – Rear sets the standard for a back-up rear sight: all-steel construction with a QPQ nitride finish, a low 0.38 in stowed height and 2.1 in stowed length, and 1.80 oz weight with hardware. It deploys to 1.42 in above the rail (standard AR height) and offers a flip-over dual aperture — 0.07 in small and 0.19 in large. Windage adjusts without tools at about 0.5 MOA per click on a 14.5 in sight radius (0.4 MOA at 20 in), with detent-secured components. Mounts to MIL-STD-1913 Picatinny / STANAG 4694 rails. Made in the USA.
Key features
- All-steel construction with QPQ nitride finish
- Stowed height ~0.38 in, stowed length 2.1 in; deployed 1.42 in above rail
- Weight 1.80 oz with hardware
- Dual flip apertures: 0.07 in small, 0.19 in large
- Tool-less windage, ~0.5 MOA per click (14.5 in sight radius)
- MIL-STD-1913 Picatinny / STANAG 4694 rail mount
- Magpul code MAG276; made in the USA
Frequently asked questions
Does the MBUS Pro rear co-witness with a red dot?
It deploys to standard AR sight height (1.42 in above the rail), so it co-witnesses with optics mounted at standard AR height.
Which front sight pairs with it?
The MBUS Pro Sight – Front (MAG275) is the matching front; the MBUS Pro Offset set (MAG525/526) is the 45-degree version.
Is it steel or polymer?
All steel with a QPQ nitride finish.
Specifications from Magpul (magpul.com).
Firearm parts and accessories are supplied by 3 Gun Tactical, Licensed Firearms Dealer 50001578, Tingalpa QLD. Check your state’s firearm-parts and magazine rules before ordering.









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