There are 4 costumes for the Sniper Rifle: McManus 2020, GI Sniper, Lever-Action and Block Gun.
Clip Size, Damage, Rate of Fire and Scope Shot can all be upgraded 5 levels each,
with a separate Money Shot "ultimate upgrade".
The Sniper Rifle is an extreme powerful long range rifle that is designed to eliminate long distance targets. The Sniper Rifle is extremely accurate and can shoot through multiple targets, which gives the weapon potential in more than 1 target if 2 NPCs are standing in close proximity. The Sniper Rifle has some close range potential, but there are other weapons than are much more better at close range as hip-fire with the Sniper Rifle is poor and the magnified scope makes hitting close range targets is made more difficult. The Money Shot upgrade gives an extra way of making money, although doing activities and diversions may be a better idea overall.
The Sniper Rifle succeeds the McManus 2015 from Saints Row: The Third and functions very similarly. Both have reasonably good performance against vehicles and share the same long range, high power and accuracy traits.