Leapers UTG AR-15 Low Profile Flip Up Model 4 Front Sight
Original price was: $15.99.$13.97Current price is: $13.97.
Enhance your AR-15’s accuracy with the UTG Low Profile Front Flip Up Sight. Engineered with a robust Posi-lock design for reliable flip up and down, this sight features precision elevation adjustments and an adjustable square post assembly for optimal shooting accuracy. Designed for compatibility with high profile gas blocks and all Picatinny/Weaver style rails, this detachable sight is a must-have for tactical shooting.
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Leapers Flip Up Model 4 Front Sight
The UTG low profile front flip up sight has a robust Posi-lock design to repeat flip up and down. With precision elevation adjustments and an adjustable square post assembly helps with AR platform shooting accuracy. The detachable sight is profile designed for installation on a high profile gas block and works on all picatinny/weaver style rails on AR-15 Handguards.
Made in the USA
SKU: MNT-751L
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information: www.P65Warnings.ca.gov
Flip-up front sights fold flat against the top rail when not in use, allowing a magnified optic or red dot to be used without the front sight post obstructing the field of view through the optic. When needed, the front sight deploys upward to the vertical position and is used with a compatible flip-up rear sight to form a complete back-up iron sight (BUIS) system. Having a set of BUIS on an optics-equipped AR-15 ensures the firearm remains usable for accurate iron sight shooting if the primary optic is damaged, fails, or runs out of battery. A front sight positioned at the forward end of the top rail establishes the correct sight radius — the distance between front and rear sights — which directly affects the precision of the iron sight system. Some models mount on a gas block rather than the top rail, allowing a longer handguard to extend forward while retaining a front sight at the gas block position. UTG flip-up front sights are compatible with standard Picatinny (MIL-STD-1913) rails on AR-15 flat-top upper receivers. When selecting BUIS, confirm front and rear aperture height compatibility for proper co-witnessing with the primary optic — lower-third and absolute co-witness heights produce different sight pictures through a red dot or holographic optic.
| Weight | 1 lbs |
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Frequently Asked Questions
What is the “Model 4” designation on this front sight?
Model 4 in UTG’s sight lineup refers to a specific design profile intended to replicate or complement the appearance and function of the M4/AR-15 standard front sight post configuration. The low profile flip-up design keeps the sight compact when folded and deploys to a standard front sight post height when in use.
How does a flip-up front sight fold and deploy?
A flip-up front sight folds flat against the top rail when not in use, clearing the view through a primary optic. A button or lever allows the sight to spring upward to the deployed position when needed. The deployed sight is used with a compatible flip-up or fixed rear sight for iron sight backup.
What rail systems is this compatible with?
This flip-up front sight mounts to standard Picatinny (MIL-STD-1913) rails on AR-15 flat-top upper receivers. Position it at the forward end of the top rail for the correct sight radius with the paired rear sight.
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