Brownells 75th Anniversary - A Shooting Heritage

U.S. Army Standard-Issue Backup Sight For M4/M16A4

Current U.S. Army standard-issue backup rear sight for M4 carbines and M16A4 rifles flips up instantly at the touch of your thumb when primary sight fails or tactical situation makes iron sights preferable. Designed in conjunction with Picatinny Arsenal engineering staff and rigorously tested at Fort Benning and Aberdeen Proving Ground for robustness, ease of use, and effective targeting out to 600 meters. Detent-locking lever lets you quickly switch to one of eight range settings: 200, 300, 350, 400, 450, 500, 550, and 600 meters. Adjust windage easily with grooved, A2-style windage knob and position markers on the back of the sight for repeatability of settings. Bright, white, laser etched numbers and markers are clearly visible even in low light. Rugged machined steel construction ensures sight retains zero even under heavy, full-auto fire. Clamps securely to the rearmost slot of MIL-STD 1913 Picatinny or Weaver-style accessory rail on flattop receiver via simple but strong locking bar and bolt. Rounded corners and beveled edges further reduce danger of snagging on other gear when sight post is down. Regulates correctly with A2 front sight on any AR-15-style rifle or carbine; instructions included for adjusting front sight post height to set exact zero. Designed to co-witness with most non-magnifying optical sights.

AR-15, Issue:03, Page:033
AR-15, Issue:04, Page:039
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AR-15, Issue:07, Page:057
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AR-15, Issue:11, Page:068
Big Book Catalog, Issue:62, Page:039
Big Book Catalog, Issue:63, Page:050
Big Book Catalog, Issue:64, Page:057
Big Book Catalog, Issue:65, Page:054
Big Book Catalog, Issue:66, Page:059
Big Book Catalog, Issue:67, Page:064
Big Book Catalog, Issue:68, Page:067
Big Book Catalog, Issue:69, Page:068
Big Book Catalog, Issue:70, Page:069
Big Book Catalog, Issue:71, Page:073
Big Book Catalog, Issue:72, Page:075
Big Book Catalog, Issue:73, Page:051
Big Book Catalog, Issue:73, Page:082
SPECS: Steel, matte black finish.


Online Only
In Stock

Color: Black

Style: Adjustable, Flip-Up Sights

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