really cool project. Thanks for sharing the link. It seems like he should have just made it a pistol and used a buffer tube with no stock. Then the barrel would be 1/2 scale. Really cool regardless.
Thumbs up on the Rainer Arms uppers. They have several options and are great build quality if you want a custom and complete upper or just good parts. I like 9.5" 1:7 twist on the short side and 12.5" 1:9 twist max length. The 10.5" is a nice compromise and either twist is fine (why not...
Confirming that most Coharie came with the full auto bolt carrier. You should look up the images of the full auto feature (trip) on the carrier and make sure yours has one. No need to buy a new BCG if yours is all set. You obviously can't use a "pinned" trigger group on the semi-auto, so it...
You can't change the rifle receiver to a pistol...it has to have been registered as a pistol from day one. I would personally not move the spikes parts to the Anderson lower. Spikes are know to be good parts and the Anderson could be built with lowest cost parts. A long distance gun should...