Originally Posted by Gunny_McSmith
FYI: A modded m16 to a "sniper-ish" platform is called a SPR = Special Purpose Rifle
For the internal upgrades, I would suggest you to get a better quality internals, so that your shots would be really consistent.... (essential thing on a sniper rifle...
I would even suggest you to go with a 6.01mm tightbore(for maximum consistency/precision) + high quality ammo :P
Better hopup is a good thing to upgrade, since you will want a near perfect airseal
We usually call them DMR's (Designated Marksmen Rifles)
M14 Mod 0
There is a huge list!
Unless the OP is going to specifically build the Mark 12 SPR....