NcStar Mark III 3-9x42mm P4 Sniper Scope - Black, 36.8-12 ft @ 100 yds FOV

The NcStar Mark III 3-9x42mm P4 sniper scope is a compact AR-platform optic built to coexist with backup iron sights and modern accessories. With a centerline height optimized for 1.5-inch AR risers, this scope gives you the magnification range and field of view needed for mid-range precision shooting without forcing you to choose between a primary optic and emergency BUIS. The 36.8 to 12 foot field of view at 100 yards tracks your targets across variable terrain and lets you dial up magnification when precision matters.

This scope brings practical features to the AR hunter and tactical shooter: a blue and green illuminated reticle with independent brightness controls for each color, so you can dial in visibility whether you're shooting in dim timber or bright desert conditions. The included 100–500 yard bullet drop compensator turret is calibrated for M193 55-grain full metal jacket ammunition—the most common 5.56 load on the range and in the field. The quick-focus eyepiece lets you sharpen the image fast, and fully multi-coated optics maximize light transmission for a crisp sight picture. A lowered turret profile accommodates optional 34mm micro-dot mounts if your setup demands it, and the integrated sun shade cuts glare without eating into your rail estate.

Built around a black anodized aluminum tube, the Mark III handles the recoil and temperature swings that come with serious shooting. It ships with lens caps, batteries for the illuminated reticle, and a quick-release mount engineered for repeatable zero and fast transitions between rifles. This is a scope for shooters who want magnification and illumination without the bulk—and who aren't willing to sacrifice practical backup sighting.

Key Features

• 3-9x magnification with 42mm objective lens
• 36.8–12 foot field of view at 100 yards
• Blue and green illuminated P4 reticle with adjustable brightness
• BDC turret calibrated for 5.56 M193 55gr. FMJ ammunition, 100–500 yard range
• Optimized 1.5-inch centerline height for AR-15 rifles with low-profile backup sights
• Quick-focus eyepiece for rapid image clarity
• Fully multi-coated lenses for superior light transmission
• Integrated slant-cut sun shade
• Quick-release mount with improved locking lever
• Black anodized aluminum construction
• Includes lens covers and reticle illumination batteries

Specifications

Frequently Asked Questions

Will this scope work with my AR-15 backup iron sights?

Yes. The Mark III's centerline height is raised to 1.5 inches, which is the standard height for AR-platform risers and leaves plenty of clearance for low-profile backup BUIS behind the rear optics mount.

What ammunition is the BDC turret calibrated for?

The bullet drop compensator is dialed for M193 55-grain full metal jacket ammunition. If you're shooting a different round, you can still use the scope, but you'll need to verify your holds or dial adjustments for your specific load.

Can I use a 34mm micro-dot mount on this scope?

The scope's lowered turret profile was designed to accommodate optional 34mm micro-dot mounts if your setup requires one. Check mount compatibility before purchase.

What's included in the box?

The scope comes with lens covers and batteries for the illuminated reticle. A quick-release mount is included and ready to attach to your AR rail.