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Magpul

Magpul MBUS Pro LR Adjustable Rear Sight

Steel folding rear sight with 200-600m elevation drum

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Quick Specs

Price
$200
Weight
4.5 oz
Brand
Magpul
Category
buis

Features

  • Case-hardened steel
  • Melonite QPQ finish
  • 200-600m elevation drum
  • Folding rear

Capability Boosts

Reliability+1
Long Range+1

Recommended For

Outdoor Defense+2
Home Defense
Duty/Patrol
Range Training

Compatibility Tags

family: modern-riflefamily: ar-patterninterface: picatinny-top

Overview

The MBUS Pro LR is Magpul's range-adjustable backup rear sight, built to give designated-marksman AR-15 builds a dial-for-distance iron sight option without the price premium of the KAC Micro Folding Rear. The elevation drum is calibrated 200-600m in 100m increments for 5.56 NATO out of a 14.5-16" barrel. A trained shooter can range the target, dial the elevation, hold center, and break the shot — the same workflow as a precision rifle scope, just on irons.

Construction is identical to the regular MBUS Pro: case-hardened steel with Melonite QPQ finish, tool-free windage adjustment, and a folding deployment with positive lockup. The single difference is the rotating elevation drum on the rear sight body. The drum protrudes slightly when stowed, so the LR rear is taller folded than the standard MBUS Pro rear. That's the trade-off: ranging capability costs you a little folded profile.

Pair the LR rear with a standard MBUS Pro front sight or the dedicated MBUS Pro LR Sight Set, which ships both front and rear together. The LR is overkill for a CQB rifle or a 200-yard range gun. It earns its keep on a 16-18" barrel, a precision-leaning AR build, or a rifle where the irons function as a real ranging backup to a magnified optic. For shooters who want the KAC Micro Folding Rear's capability at roughly half the price, the MBUS Pro LR is the standard answer.

Key Features

  • Case-hardened steel with Melonite QPQ finish
  • 200-600m rotating elevation drum (100m increments)
  • Tool-free windage adjustment
  • Folding rear with positive deployment detent
  • Compatible with standard MBUS Pro front sight
  • Sold as rear alone (MAG527) or full LR set
  • Calibrated for 5.56 NATO out of 14.5-16" barrels

Pros

  • +Dial-for-distance ranging in a folding BUIS at $140
  • +Roughly half the price of the KAC Micro Folding Rear
  • +Same Magpul Melonite steel durability as the regular MBUS Pro
  • +Pairs with any standard MBUS Pro front sight

Cons

  • Sits taller folded than the standard MBUS Pro rear
  • Heavier than non-LR alternatives (drum mass)
  • Calibration assumes 14.5-16" barrel and standard 5.56 ammo
  • Overkill for CQB or short-range range guns

Detailed Specifications

Material
Case-hardened steel
finish
Melonite QPQ
part
MAG527 (rear)
elevationRange
200-600m in 100m increments
windageAdjustment
Tool-free
caliberCalibration
5.56 NATO, 14.5-16" barrel
Mount Type
MIL-STD-1913 Picatinny
countryOfOrigin
USA

Compatible Platforms

+150 more

Pairs Well With

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