ASG M40A3 McMillan Sniper Rifle SportLine
im buying this rifle and should have it Thursday, i want to upgrade it so it will preform to a good standard as i play at ground zero (woodland). i had a look on patrol base and they recommend
ASG Steyr SSG 69 P2 Precision Inner barrel 6.03 x 465mm
ASG Steyr SSG 69 P2 High Power Spring
what other upgrades will be required if anyone has done this before or know of anyone that has.
also what is the compatibility like with other parts?