Killer Instinct Boss 405 Review

Killer Instinct Boss 405 Review

Known for its affordable and powerful products, Killer Instinct has built an accurate crossbow that will elevate your hunting skills and help you reach maximum speed and power. Boasting a compact frame, the new BOSS 405 features a reduced length which makes it easier to handle and carry, without causing hand fatigue or wrist problems. The 6-position AR-style buttstock combined with the adjustable X-Lok offers a customized fit, allowing you to shoot from afar without missing your target.

The enhanced micro-lite aluminum barrel of the new Killer Instinct BOSS 405 crossbow and the 3.5-pound trade-marketed trigger are designed to deliver consistent accuracy and precision shooting after each bolt.

Preferred for its high-octane firepower and agility, this new crossbow hits targets hard at 405 feet per second, making it one of the fastest and most reliable models in its category and price range. In addition, the adjustable frame extends and shortens the crossbow according to the shooter’s requirements, which makes it an excellent fit for hunters of all heights and body types.



Package includes:


  • Optics: Lumix 4 x 32 IR-W Scope
  • Cocking Device: Rope Cocker with String Suppressors
  • Quiver: 3-Bolt Quiver
  • Arrows: 3 HYPR Lite Bolts (370 grains) with field tips
  • Stick of rail lube 





Speed (Up To) 405 fps
Kinetic Energy (Up To) 134 ft-lb
Length (w/o foot stirrup) 33.5’’- 36’’
Width Axle-to-Axle (uncocked/cocked) 14.75’’/18.75’’
Power Stroke 13.5’’
Weight (w/out accessories) 5.5 lbs.
Draw Weight 220 lbs.


Key Features

  • It boasts a compact frame with a reduced overall length that makes it easy to handle and lightweight to carry, which means it is more comfortable than other similar models.
  • It provides a custom fit with 6-position AR-style buttstock and adjustable X-Lok to meet the requirements of all hunters, regardless of their height.
  • It features a Micro-Lite aluminum barrel to provide constant accuracy shot after shot.
  • It comes with a 3.5-pound KillerTech trigger.



  • It is amongst the fastest crossbows you can find within this price range.
  • It comes with a compact and lightweight design.
  • It is easy to set up and cock.
  • It provides consistent accuracy shot after shot.


  • It only comes with 3 bolts, which is also the maximum supported load. You’ll have to buy additional bolts separately.



Build Quality – Durability


This product is designed to deliver enhanced quality and last you for a long time from now on. As opposed to other similar crossbows, the new Killer Instinct BOSS 405 will meet all your hunting requirements, becoming a trustworthy ally during your trips outdoors.

It is sturdy, reliable, and extremely durable, so you won’t have to worry about it easily breaking, chipping, or corroding due to harsh weather conditions.



One of the things we liked the most about this crossbow is the unique design. The compact frame is made of durable and high-quality materials that ensure a comfortable fit. Also, the reduced overall crossbow length makes the item easy to maneuver and convenient to carry and store whenever you’re not using it.


Custom fit

Benefit from a customized fit to ensure the ultimate hunting experience whenever you handle this crossbow. The BOSS 405 features 6-position AR-style buttstock and an adjustable X-Lok that, combined, ensure a customized fit of the item.

You can easily get to increase or decrease the size of the frame to adjust to your hands and height, maximizing your strength and hunting skills whenever you push the trigger. As a result, you can easily chase animals without worrying about handling a unit that is too heavy or too large for your hands.


Precision shooting

The success of your hunting trip depends on a variety of things, not just your aiming and shooting skills. Unless the weapon you’re using is designed to deliver precision shooting, you won’t be able to hit your target from the first time, resulting in misplaced bolts and hours or even days wasted on scouting your victim.

The new Killer Instinct BOSS 405 crossbow features an enhanced Micro-Lite aluminum barrel and a KillerTech trigger weighing 3.5 pounds to ensure consistent and precise shooting every time. Therefore, even when you’re shooting your bolts one right after the other, the crossbow won’t change its position, allowing you increased accuracy and lowering that chance that you miss your target.


Noise and Vibration


One of the first things you need to check when buying a new crossbow is how silent it is. Keeping quiet in the woods is the only way to hunt your victim without it noticing you, which means all your gear and accessories must be as silent as possible.

The Killer Instinct crossbow is made of high-quality materials to deliver a compact item that is comfortable to carry around and use in all conditions, without making any noise. The frame and the strings included reduce vibrations to a minimum, delivering increased performance, no matter if you’re a beginner or a pro.


Ease of Use and Assembly

blankFinally, the product is easy to use and put together thanks to the step-by-step instructions available in the package or on the company’s website. Without being a professional hunter, you can mount the crossbow and make it completely functional in less than 30 minutes, which means you can start hunting almost immediately.

When it comes to the ease of use, we have already mentioned the reduced dimensions and the compact size that make the unit lightweight and comfortable to operate by people of various heights.

Keep in mind that we are talking about a professional hunting crossbow, so ease of use is a must if you want to achieve great accuracy with every shot. The barrel reduces string-to-rail contact by up 50%, offering downrange accuracy.

All in all, the device weighs under 6 pounds without accessories, which makes it lightweight and extremely comfortable to carry around in your backpack or hand, whenever you plan on hunting dinner.

Perhaps the main downside of the product is that it only comes with 3 bolts, which means you need to have proper training before shooting to make sure you don’t miss your target. You can buy extra bolts for an additional price but there won’t be any room to store them on the crossbow.



Killer Instinct BOSS 405 Review Summary

This crossbow is a good choice for beginners and not only, especially since you get a complete weapon that delivers outstanding performance and precision at a low price. It can shoot bolts at speeds of up to 405 fps, has a draw weight of 220 lbs., and it’s easy to assemble and use, even for someone inexperienced. It would have been nice for the pack to contain more bolts, but you can always purchase more separately and select the type that’s most suitable for you

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