Replace your default AK-47 and M4 data line with this one :

$ MP5			INSTANT_HIT	140.0 190.0	353	-1		5	riflebad	30	 20		0.74 -0.05  0.13       0  0	0.75 1.1 	 9  10 8	 9  10 8  30	7001
$ MP5			INSTANT_HIT	110.0 150.0	353	-1		5	rifle		30	 20		0.74 -0.05  0.13       1  50	1.05 1.0 	 6  8  6	 6  8  6  30	7011
$ MP5			INSTANT_HIT	130.0 190.0	353	-1		5	rifle		30	 20		0.74 -0.05  0.13       2  999	1.2  1.5 	 6  8  6	 6  8  6  30	7031

$ M4			INSTANT_HIT	140.0 190.0	356	-1		5	riflebad	30	 30		0.74 -0.05  0.13     0  0	0.45 0.9 	 6 10  8	 6 10  8  99	7001
$ M4			INSTANT_HIT	110.0 150.0	356	-1		5	rifle		30	 30		0.74 -0.05  0.13     1  50	0.65 1.1 	 6  8  6	 6  8  6  99	7011
$ M4			INSTANT_HIT	130.0 190.0	356	-1		5	rifle		30	 60		0.74 -0.05  0.13     2  999	0.80 1.1 	 6  8  6	 6  8  6  99	7031