The NcStar AR15 Flip-Up Front Sight (brand part no. MARFLF) gives an AR-15 a folding backup front sight designed to mount on top of gas blocks with Picatinny rails sitting lower than the receiver’s top rail. The flip-up A2 front sight post folds down out of the optic’s field of view when not needed, and it’s fully adjustable for elevation to dial in a precise zero. Built from aluminum and steel, the sight measures 1.2″ extended and 2.1″ folded, and weighs just 3.4 oz.

Key Specifications

• Uses a flip-up A2 front sight post that folds out of view when not in use.
• Designed to mount on gas blocks with a lower rail than the receiver’s top rail.
• Fully adjustable for elevation.
• Built from aluminum and steel construction.
• Measures 1.2 inches extended and 2.1 inches folded.
• Weighs approximately 3.4 oz.

Frequently Asked Questions

Does this sight fold down when not in use? Yes, it flips down out of the optic’s field of view.

Is it adjustable? Yes, it’s fully adjustable for elevation.

Buy the NcStar AR15 Flip-Up Front Sight

Add a reliable folding backup front sight to your build. Order the NCStar Flip-Up Front Sight from our Lubbock, Texas gun shop for fast, reliable shipping — or browse more scope accessories and parts.