Piston vs direct impingment, that's the evolution vs creation of the ar world. Piston is heavier, cleaner, cooler, and more expensive. Direct is simpler, therefore less parts to break, plus a proven track record. It's also the way the platform was designed. But a di gun is much more...
The 300 is a lower velocity round than 5.56, most people would probably agree when I say it's limit is somewhere around 250 yards. It really shines as a brush gun and at 100 yards. You'll probably won't be dropping coyotes @ 400 yards with it. The cool thing about 300 is the barrel is the only...
I currently have 3 complete, one almost done, and one stripped lower. I also have a box of misc parts that might be another gun if I put them together. Two others have been through my hands in the last year. 12 months ago I had never owned one.
A bull barrel in theory holds a tighter group bc 1. It doesn't vibrate as much when fired. 2. It heats up slower and as the barrel gets hot you lose some accuracy. On the other hand you trade ease of carry and weight for that accuracy. How far are you wanting to shoot and how tight do you...
It really depends on how much building you feel like doing. You can buy a built lower and a built upper, bolt carrier group, and charging handle and snap em together in 2 minutes, or you can assemble every pin and piece yourself in a few hours (maybe not the first time.) I would start by...