Replace your default MP5 SMG data line with this one :

$ MP5				INSTANT_HIT	100.0 120.0	353	-1		5	uzibad		30	 20		0.74 -0.05  0.13       0  0	0.75 1.1 	 6  8  6	 6  8  6  30	7001
$ MP5				INSTANT_HIT	110.0 150.0	353	-1		5	uzi		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	uzi		30	 20		0.74 -0.05  0.13       2  999	1.2  1.5 	 6  8  6	 6  8  6  30	7031
