The Aero Precision AR15/M4 5.56 Ambidextrous Charging Handle will work with an AR chambered in 7.62x39.
The Aero Precision AR15/M4 5.56 Ambidextrous Charging Handle should work with an M&P Sport 2.
Yes, the Aero Precision AR15/M4 5.56 Ambidextrous Charging Handle will be compatible with your Colt AR15 upper receiver.
Yes, the Aero Precision AR15/M4 5.56 Ambidextrous Charging Handle will be compatible with a Ruger SFAR since it is designed to be a small framed 308 rifle that uses mostly AR15 compatible parts.
Yes, the Aero Precision AR15/M4 5.56 Ambidextrous Charging Handle will work in the Aero Precision EPC9.
Yes, the Aero Precision AR15/M4 5.56 Ambidextrous Charging Handle will work for a 300 BLK.
Sounds like there could be an issue with your product, if you have not already done so, I would exchange it for another unit.
No, "gas buster" is a trademark of a competing brand.
This will work with any AR-15 build.
It will work with any ar 15 build but not ar 10 (.308)