Curious on the 6mm ARC

[scuD]

For those who have put one together, does the 6mm ARC fit right into an M4/AR-15 receiver, or does it require something different?

 

[ELD Pilot]

For those who have put one together, does the 6mm ARC fit right into an M4/AR-15 receiver, or does it require something different?

Works in the AR15 perfectly. I have an AR15 in the 6.5 Grendel and it's pretty much the same cartridge as the Grendel only in a .244 caliber.

 

[scuD]

Thanks for the info. That’s just what I needed to confirm. If it fits an AR-15 the same way a 6.5 Grendel does, then that pretty much clears things up for me. I was really hoping to avoid chasing down any strange receivers or proprietary setups. Seems like the best plan is to stick with a standard AR-15 upper and lower, using the correct bolt and magazines. Thanks for the clarification!