Vortex Crossfire® II 4–16x50 AO Dead-Hold BDC (MOA) Riflescope

The Vortex Crossfire® II 4–16x50 AO is a versatile, mid-to-long-range riflescope designed for hunting and field target use. Featuring a Dead-Hold® BDC (MOA) reticle, adaptable magnification range, and an adjustable objective (AO) for parallax correction, it provides reliable optical clarity, rugged construction, and performance in diverse shooting applications. ([turn0search0][turn0search1])

Key Features

Variable Magnification:
The riflescope offers a 4×–16× zoom range, allowing shooters to engage targets from close-up to extended distances with ease and precision. ([turn0search0])

Large Objective Lens:
A 50 mm objective lens enhances light-gathering capability to produce brighter and clearer images in lower-light situations — ideal for dawn/dusk hunting or overcast conditions. ([turn0search0])

Reticle & Focal Plane:
Equipped with the Dead-Hold® BDC (MOA) reticle on the Second Focal Plane (SFP), the hash-mark design simplifies holdover and windage estimation without constantly adjusting turrets. ([turn0search0][turn0search1])

Construction & Durability:
Crafted from aircraft-grade aluminum with a 30 mm main tube, the scope is nitrogen purged and O-ring sealed to remain waterproof, fogproof, and shockproof under harsh environmental conditions. ([turn0search0][turn0search3])

Adjustable Parallax/AO:
The Adjustable Objective (AO) allows users to fine-tune parallax correction from close-range out to infinity, improving focus accuracy and target definition across varied distances. ([turn0search0][turn0search1])

Optical Enhancements:
• Fully multi-coated lenses increase light transmission and contrast for crisp images.
• Fast-focus eyepiece lets shooters quickly achieve a sharp reticle focus before taking a shot. ([turn0search0][turn0search1])

Turrets & Adjustments:
• Capped turrets with ¼ MOA clicks permit precise elevation and windage adjustments.
• Each turret revolution provides 15 MOA of adjustment travel.
• Maximum windage and elevation travel is 50 MOA each, allowing for broad zero-in and compensation range. ([turn0search0][turn0search1])

Technical Specifications

Performance & Practical Use

The Crossfire II 4–16x50 AO riflescope blends optical clarity, rugged reliability, and practical magnification flexibility to serve a wide range of shooting scenarios — from medium-range hunting to more precise field engagements. The large objective enhances performance in low-light environments, while the adjustable objective and BDC reticle allow clear focus and predictable holdovers without over-reliance on turret dialing. ([turn0search0][turn0search1])

Its durable, waterproof construction ensures dependable performance in challenging weather or terrain, making it a solid option for hunters, target shooters, and outdoor enthusiasts who want quality optics with a broad usable magnification range. ([turn0search3])

Best Suited For:

✔ Mid-range and versatile field hunting
✔ Target shooting with varied distances
✔ Hunters seeking top-light performance and parallax correction
✔ Shooters who prefer MOA holdover reticle guidance

User Tips

Holdover Practice:
Familiarize yourself with the Dead-Hold BDC MOA reticle across distances and loads — practice estimating holdovers by using the reticle’s built-in hash marks alongside traditional sight-in routines.

Parallax Adjustment:
Use the adjustable objective to eliminate parallax error at specific ranges before crucial shots; this improves focus and accuracy, especially when engaging distant targets.

Lens Maintenance:
Keep lenses free of debris and smudges with the included lens cloth to maintain light transmission and image clarity, particularly in low-light conditions.