AR-15 / M4 flip up rear sight with locking feature. Dual aperture for long and short range.a
• Low profile
• Black anodized aircraft grade aluminum
• Ball bearing pivot detent
• Automatically locks into position when raised
• Flip-up posi-lock design to guarantee zero
• A2 style dual aperture
• 0.65 MOA on M-4 type rifles
• 0.49 MOA on A-4 type rifles