What makes an ar15 and m4?

Related questions

1. What's the difference between m4 and m16?
2. Is an m16 an AR 15?
3. What makes a PDW?
4. What's the difference between an m4 and an AR 15?
5. Which is better m4 or AK 47?
6. Which is better m4 or m16?
7. What's the difference between an AR 15 and an m16?
8. Is the AR 15 military grade?
9. Is an AR 15 considered a military grade weapon?
10. Is an AR 15 a high powered rifle?

Tags

1. #operated
2. #fired
3. #cooled
4. #three
5. #shorter
6. #version
7. #bursts
8. #lighter
9. #called
10. #there
11. #rifle
12. #automatic
13. #versus
14. #round
15. #fully
16. #56x45mm
17. #compare
18. #simplest
19. #weapon