ATI .450 Bushmaster AR-15 Upper Receiver

Published on August 7, 2018
Duration: 1:01

This video reviews the ATI .450 Bushmaster AR-15 upper receiver. It highlights key differences from standard AR-15 uppers, including a larger muzzle brake, a KeyMod handguard, an enlarged ejection port, and a larger bolt face to accommodate the .450 Bushmaster cartridge. The product is presented as a straightforward conversion for existing AR-15 lower receivers.

Quick Summary

The ATI .450 Bushmaster AR-15 upper receiver is designed for easy conversion of a standard AR-15 lower. Key features include a larger muzzle brake, a free-floated KeyMod handguard, an enlarged ejection port, and a larger bolt face to accommodate the .450 Bushmaster cartridge.

Chapters

  1. 00:00Introduction
  2. 00:03ATI .450 Bushmaster Upper Receiver
  3. 00:14Key Differences for .450 Bushmaster
  4. 00:21Larger Muzzle Brake
  5. 00:27KeyMod Handguard
  6. 00:31Enlarged Ejection Port
  7. 00:36Larger Bolt Carrier Group
  8. 00:44Test Firing Information
  9. 00:47Conclusion

Frequently Asked Questions

What are the key modifications on the ATI .450 Bushmaster AR-15 upper receiver?

The ATI .450 Bushmaster upper features a larger muzzle brake for the bigger bullet, a KeyMod handguard, an enlarged ejection port to accommodate the cartridge, and a larger bolt face for the .450 Bushmaster round.

Can I put the ATI .450 Bushmaster upper on any AR-15 lower?

Yes, the ATI .450 Bushmaster upper receiver is designed to be installed on a standard AR-15 lower receiver, making it a straightforward conversion to chamber .450 Bushmaster ammunition.

Why is the ejection port larger on the .450 Bushmaster upper?

The ejection port is enlarged on the ATI .450 Bushmaster upper receiver to properly accommodate and facilitate the extraction of the larger .450 Bushmaster cartridge during cycling.

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