TenPoint Viper S400 Crossbow Package w/Acuslide Graphite

TenPointSKU: CB20015-1819

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Sale price$1,599.00

Description

TenPoint Viper S400 Crossbow Package with ACUslide RangeMaster Pro Scope in Graphite combines performance and precision in a compact design. At just 32 inches long, this crossbow delivers speeds up to 400 FPS, ensuring quick and accurate shots in the field. With a silent ACUslide cocking and safe de-cocking system, preparing for your shot is both effortless and discreet. The advanced design minimizes noise, allowing for a stealthy hunting experience.

Weighing only 7.5 pounds (without accessories), the Viper S400 is easy to carry during extended hunting trips. The S1 trigger offers a crisp, 2-stage pull, enhancing accuracy. The innovative Tec-X Stock reduces weight while maintaining stability. The included Rangemaster Pro Scope features multi-coated lenses for optimal light transmission and illuminated aiming points, which improve targeting in various lighting conditions. The Micro-Trac Barrel design reduces string-to-rail contact by 50%, enhancing accuracy and extending string life.

Features – Key Benefits Bullets

  • SUPERIOR SPEED: Reach blistering speeds up to 400 FPS for quick and effective shots.
  • SILENT COCKING: ACUslide system allows for silent and safe cocking and de-cocking, ensuring stealth.
  • PINPOINT ACCURACY: Rangemaster Pro Scope’s multi-coated glass and illuminated points enhance targeting precision.
  • LIGHTWEIGHT DESIGN: Tec-X Stock reduces weight by 1/2 pound, making this crossbow easy to maneuver.
  • CRISP TRIGGER BREAK: S1 Trigger delivers a consistent, zero-creep design for enhanced shooting accuracy.
  • IMPROVED ACCURACY: Micro-Trac Barrel minimizes string-to-rail contact, increasing overall shooting precision.
  • DURABLE AND COMPACT: Ultra-compact design withstands outdoor conditions while remaining easy to transport.
  • STYLISH FINISH: Sleek Graphite color adds a modern touch to practical functionality.

Technical Specifications

Tech Specifications
Item Condition New
Length 32"
Weight 7.5 lbs (without accessories)
Optics Included RangeMaster Pro Scope
Kinetic Energy 135 ft. lbs.
Power-Stroke 11"
Speed (400 Gr.) 390 FPS
Color Graphite
Length (Range) 30"-34.9"
Product Type Crossbow
Width (Cocked) 7.2"
Width (Uncocked) 11"
UPC 788244014129
MPN CB20015-1819

What's in the Box?

  • Crossbow
  • RangeMaster Pro Scope
  • ACUslide cocking system
  • Instruction manual
  • Accessory kit

Customer Reviews

“The Viper S400 is lightweight and very easy to maneuver. The accuracy is impressive!”
“I love the silent cocking feature. It makes a huge difference in the field!”
“The scope provides excellent clarity even in low light. Highly recommend!”

FAQ

One common concern is the crossbow's noise level during cocking. The ACUslide system significantly reduces noise, allowing for a much quieter setup. This is especially beneficial in hunting scenarios where stealth is crucial. Additionally, the system is designed for user safety, making it a reliable choice for both novice and experienced hunters.

Maintenance is straightforward. Regularly inspect the string and cables for wear, and ensure the scope is properly zeroed before use. The Micro-Trac Barrel design also aids in maintaining accuracy over time, as it reduces string contact, leading to less wear.

Comparing the Viper S400 to other models, it stands out for its combination of speed, weight, and accuracy. Many users prefer it over heavier crossbows due to its compact size and maneuverability without sacrificing performance.

Similar Models

Explore more from TenPoint for your hunting needs. Consider the TenPoint Shadow NXT Crossbow for a different weight balance, or the TenPoint Nitro XRT for even greater speed. Discover the full range of TenPoint crossbows tailored to enhance your hunting experience.

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What Our Customers Say

"I've been hunting for over 20 years and this is by far the clearest scope I've ever used. The glass quality is exceptional and the low-light performance is outstanding. Took it on a dawn elk hunt and could see perfectly."
Michael T.
Verified Buyer | Professional Hunter
"As a competitive shooter, I need precision I can count on. This scope delivers exactly that. The turrets have perfect tactile feedback, tracking is spot-on, and the zero has held perfectly through thousands of rounds. Worth every penny."
Sarah K.
Verified Buyer | Competition Shooter
"I was skeptical about spending this much on a scope, but after using it for a season, I can say it's the best investment I've made for my rifle. The clarity is unmatched and the illuminated reticle is perfect for low light conditions."
Robert J.
Verified Buyer | Recreational Hunter
"As a law enforcement officer, I need gear I can trust with my life. This optic has been through rain, mud, and extreme temperatures without missing a beat. The glass clarity is exceptional and the durability is unmatched."
David M.
Verified Buyer | Law Enforcement

Optics Knowledge Center

Understanding Rifle Scope Basics

Magnification

Magnification refers to how much larger an object appears through the scope compared to the naked eye. Fixed power scopes have one magnification setting, while variable power scopes offer a range (e.g., 3-9x).

Objective Lens

The objective lens is the front lens that gathers light. Larger objective lenses (measured in mm) gather more light, providing brighter images in low-light conditions but add weight and require higher mounting.

Reticle

The reticle (crosshair) is the aiming point inside the scope. Modern scopes offer various reticle designs, from simple duplex crosshairs to complex ballistic reticles with holdover points for different distances.

Adjustments

Rifle scopes have turrets for windage (horizontal) and elevation (vertical) adjustments. These are measured in MOA (minutes of angle) or MRAD (milliradians) and allow precise aiming adjustments.

Proper Scope Mounting Guide

1
Select the Right Rings & Base

Choose rings that match your scope's tube diameter (typically 1", 30mm, or 34mm). Select a base compatible with your rifle's receiver. For heavy-recoiling rifles, opt for stronger mounts.

2
Install the Base

Clean the receiver and base thoroughly. Apply a small amount of blue Loctite to the screws. Attach the base to the receiver and torque the screws to manufacturer specifications.

3
Attach the Rings

Attach the bottom halves of the rings to the base. Place the scope in the rings and loosely attach the top halves. Don't fully tighten yet.

4
Set Eye Relief & Level

Position the scope for proper eye relief (3-4 inches) in your normal shooting position. Ensure the reticle is level using a scope leveling tool. Once positioned correctly, tighten the rings evenly in a cross-pattern.

Scope Zeroing Tips

Start Close

Begin zeroing at a shorter distance (25-50 yards) to ensure you're on paper before moving to your desired zero distance (typically 100 yards).

Use a Stable Rest

Always zero your rifle from a stable shooting position using a bench rest, sandbags, or a shooting rest to eliminate as much human error as possible.

Fire Groups

Fire 3-shot groups before making adjustments. This provides a more accurate representation of where your rifle is shooting than single shots.

Make Deliberate Adjustments

Know your scope's adjustment values (typically 1/4 MOA per click). If your group is 2 inches low at 100 yards, you'll need to adjust up 8 clicks (for a 1/4 MOA scope).

Confirm Your Zero

After making adjustments, fire another group to confirm your zero. Repeat the process until your point of impact matches your point of aim.

Document Your Settings

Once zeroed, record your settings including distance, ammunition used, and environmental conditions for future reference.

Optics Maintenance & Care

Cleaning Lenses
  • Start by blowing or brushing away loose particles
  • Use a lens pen or microfiber cloth for fingerprints
  • For stubborn dirt, use lens cleaning solution (never household cleaners)
  • Clean with gentle circular motions from center outward
Protecting Your Optics
  • Always use lens caps when not in use
  • Store in a dry place with silica gel packets
  • Avoid extreme temperature changes
  • Use a quality scope cover in harsh conditions
Regular Maintenance
  • Check and tighten mount screws periodically
  • Inspect O-rings and seals for damage
  • Verify zero after rough handling
  • Clean the exterior with a damp cloth
What to Avoid
  • Never use fingers to touch lenses
  • Avoid paper products (tissues, paper towels) on lenses
  • Don't use acetone, alcohol, or household cleaners
  • Never disassemble your scope (voids warranty)

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