Ok, so I started my introduction saying that I wanted to crash course on the AR platform. I will begin with the questions now.
1. 5.56 vs .223. I keep hearing that they are "technically" the same and that all AR's with a 5.56 x 45 upper are designed to fire both. This goes against everything I've been taught with any other rifle and it seems that ANY difference, even 1/100 mm, will eventually cause undue wear on the rifling. Am I missing something?
2. There are so many many manufacturers of lowers and uppers for AR, but I have heard that ALL of those manufacturers get their parts from one of 3-4 suppliers. Is this true?
3. Are all magnifiers created equal? I was told that ALL magnifiers will cause distortion of the holographic sight Reticles. Is this true?
4. Beta Mags? Some say they are crap because the spring tension isn't strong enough and they will cause jams. Others say they are the best thing since sliced bread. Any clarification?
Thanks in advance for any info!
1. 5.56 vs .223. I keep hearing that they are "technically" the same and that all AR's with a 5.56 x 45 upper are designed to fire both. This goes against everything I've been taught with any other rifle and it seems that ANY difference, even 1/100 mm, will eventually cause undue wear on the rifling. Am I missing something?
2. There are so many many manufacturers of lowers and uppers for AR, but I have heard that ALL of those manufacturers get their parts from one of 3-4 suppliers. Is this true?
3. Are all magnifiers created equal? I was told that ALL magnifiers will cause distortion of the holographic sight Reticles. Is this true?
4. Beta Mags? Some say they are crap because the spring tension isn't strong enough and they will cause jams. Others say they are the best thing since sliced bread. Any clarification?
Thanks in advance for any info!
