The LMT Defense AR-15 Imperial BUIS Folding Sight Set (LMT part no. L8BUIS556) is a front-and-rear backup iron sight system built by LMT Defense for AR-15 rifles chambered in 5.56 NATO. The front sight uses an internal clutch that lets it flex under impact and collapse under greater force, protecting the sight from damage in the field. The rear sight adds dual windage knobs, turret-style height adjustment, and dual peep apertures with a detent lock for secure positioning. Rated effective out to roughly 700 yards, this set is built to the same tolerances LMT uses for military and law enforcement customers worldwide.

Key Specifications

• Model: MRP.
• Style: folding front and rear iron sight set.
• Effective range: approximately 700 yards.
• Front sight: internal clutch flexes under impact, collapses under greater force.
• Rear sight: dual windage knobs, turret height adjustment, dual peep apertures.
• Finish: black.
• Manufacturer: LMT Defense.

Frequently Asked Questions

What caliber platform is this BUIS set designed for?
This sight set is scaled for AR-15 rifles chambered in 5.56 NATO; a separate set is available for AR-308/MWS platforms.

Do the sights fold down when not in use?
Yes, both the front and rear sights fold for a low profile alongside a primary optic.

How far are these sights rated to shoot accurately?
LMT rates this set as effective out to approximately 700 yards.

Buy the LMT Defense AR-15 Imperial BUIS Folding Sight Set

This LMT Defense sight set, part of our Gun Sights lineup, ships fast from our Lubbock, Texas gun shop — order online today.