A very in depth review on the Echo 1 M249 SAW MK II.
- Around 350 fps, mine chronographed at 340 (I now upgraded it to a M110 spring which now makes it shoot about 380 fps)
- Range about 130-150 ft
- No box mag issues after *update* over 7500 rds
- The stock inner barrel is better and more accurate than a version two MadBull Black Python
