The troops are using either a 20" rifle or a 14.5" carbine

AR/M4 AR General Discussion
1

No 16" barrel length AR’s are used by the troops?

Ever?

Yes?

No?

Thanks

2

That’s what I used…mostly the 20".

3

Google is your friend. M16A2/A4 rifle or M4 carbine.

4

The only 16" 5.56 is the M27 IAR.