mr1 or mr2 sniper

[Dustin'sspyder]

I was wanting to snipe a little in next game of woodball, I have a mr2-e and a mr1, I also have a red dot for the mr2, and a jj 20in barrel for either one. I was wondering what else do I need to make one of these guns into a sniper? Also I halo hopper for the mr2 and a bi-pod.