Practical Personal Observations On The AR Platform .300 Blackout Truck Gun (update 5-28 with photos and minor revisions)

via Practical Personal Observations On The AR Platform .300 Blackout Truck Gun (update 5-28 with photos and minor revisions)

 

This is a pretty good writeup of one man’s Franken-300BLK. I haven’t worked with barrel blanks yet, but it doesn’t sound too difficult.