The M16A2, M16A4, M4, M4A1, Diemaco C7 and C8, etc. have a 1 turn in 7 inches rifling twist. Although 1 turn in 9 inches is actually the ideal rifling twist for the 62 grain M855/SS109 NATO round, 1 in 7 was chosen because it can fire the 64 grain M856/L110 tracer with the same performance as it would the M855/SS109. It is also advantageous in that it can fire heavier cartridges, such as the 77 grain Mk 262 cartridge, which would be too heavy for a 1 in 9 barrel to stabilise.
1 in 10 IIRC
What is the maximum effective range of the M16A2 and M9?
Sports(which stands for; Slap, Pull, Observe, Release, Tap and Shoot)http://www.armystudyguide.com/content/army_board_study_guide_topics/m16a2/m16a2-study-guide.shtml
the m16a2 has three modes of fire safe, semi-auto, and three round burst.
@ 1m
.223 caliber or 5.56mm.
The rifling is there to spin the bullet, which gives greater accuracy.
Yes. The M16A2 and M16A4 have the same delta ring and handguard cap, therefore the railed handguard from an M16A4 should fit on the A2.
It was invented by the usmc in 2000 to be a replacement for the m16a2
M16A2 rifle
No rifling.
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