Choose one of them to replace your default AK-47 or M4 data line with this one :

$ M4				INSTANT_HIT	100.0 120.0	356	-1		5	rifle		75	 90		0.74 -0.05  0.13     0  0	0.45 0.9 	 6  7  6	 6  7  6  99	7011
$ M4				INSTANT_HIT	230.0 150.0	356	-1		5	rifle		75	 90		0.74 -0.05  0.13     1  50	0.65 1.1 	 6  7  6	 6  7  6  99	7011
$ M4				INSTANT_HIT	500.0 500.0	356	-1		5	rifle		75	 90		0.74 -0.05  0.13     2  999	0.80 1.1 	 6  7  6	 6  7  6  99	7031

$ AK47			INSTANT_HIT	100.0 120.0	355	-1		5	rifle		 75	 90		0.74 -0.05  0.13     0  0	0.40 0.9 	 6  7  6	 6  7  6  99	7001
$ AK47			INSTANT_HIT	230.0 150.0	355	-1		5	rifle		 75	 90		0.74 -0.05  0.13     1  999	0.50 1.1 	 6  7  6	 6  7  6  99	7011
$ AK47			INSTANT_HIT	500.0 500.0	355	-1		5	rifle		 75	 90		0.74 -0.05  0.13     2  999	0.80 1.1 	 6  7  6	 6  7  6  99	7031