Frequently Asked Questions

What is the 450 Bushmaster?

The 450 Bushmaster cartridge is .452 Caliber with a straight-walled case length of 1.70 inches long. The 450 Bushmaster is flat shooting out to  200 yards. If the rifle is zeroed at 150 yards, the shooter can expect  to see a rise of approximately 2 inches at 100 yards, zero at 150 yards  and a drop of approximately 2 inches at 200 yards. AR-15 upper receiver  assemblies that have a free float tube or rail are very accurate and are  capable of sub 1 MOA with 450 Bushmaster 250 gr Hornady FTX® ammo.


In 2014 the Michigan DNR expanded the types of firearms that may be used  in the Limited Firearm Deer Zone (formerly called Zone 3). An AR-15  chambered in 450 Bushmaster is now legal statewide in Michigan for Deer  Hunting !  


The advantages of the 450 Bushmaster that must be considered for Deer Hunting in Southern Michigan are:

  • Recoil is approximately the same as a 20 GA Shotgun slug
  • At least twice more accurate than 12 GA Shotgun Sabots
  • 450 Bushmaster ammo cost per round is $1.50 versus shotgun sabots at $2.50 and more per round

What Kind of Accuracy Can Be Expected from Your Barrels?

  • With the right ammunition and an upper built with a free floating forearm or float tube, our 20” barrels should be able to hold a minute of angle or less. There are however no guarantees as the skill of the AR-15 builder, ammunition, shooting technique and testing conditions are all variables that will impact group size.
  • A 16” barrel by default has 4” less of rifling so accuracy will not be as good as with a 20” barrel but we have seen five shot group sizes around 1 MOA at 100 and 200 yards
  • As we get data from customers we will post these on our Range Reports Page

Read Range Reports

Do you offer Dealer Pricing ?

We do offer dealer pricing to bonafide firearm related businesses and FFL holders (an FFL is not required. 

  • Typically we require a minimum volume of 5 or more barrels purchased at one time
  • We will require a copy of your business license and sales tax certificate
  • Contact us directly for dealer program information via the Contact Us Form

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What is Nitriding or Black Nitride?

  • The thermochemical process known as Nitrocarburizing which simultaneously diffuses nitrogen and carbon into the surface of ferrous metals including 300 and 400 series stainless steel
  • Barrels treated inside and out with this non-dimensional process benefit through increased wear-resistance, fatigue strength, corrosion resistance, lubricity, velocity and accuracy
  • Nitriding converts the steel's surface without any build-up, retaining all of the benefits of traditional chrome lining without suffering the accuracy degradation commonly encountered with chrome due to its uneven application inside the barrel's bore
  • The cosmetic appeal of this external finish is second to none and is very practical for hunting and tactical applications