The PVP God Roll. Piece of Mind is a legendary kinetic pulse rifle released during The Witch Queen. Piece of Mind is a rapid-fire frame with deeper ammo reserves. Slightly faster reload when the magazine is empty. It’s a 540 RPM with 35 in the magazine. The range is a 38 with a damage falloff ~18.44m Hip / 34.58 ADS. The reload speed is 39 with a reload time of 2.28s. The recoil pattern is 58 which tends to the right. This roll will increase the range, stability, and recoil pattern to help stabilize the weapon. Here is the PVP God Roll for Piece of Mind.

Barrel
Smallbore increases range by 6 for a total of 44. It also increases stability by 7 for a total of 58.
Magazine
Ricochet Rounds increases range by 5 for a total of 49. It also increases stability by 9 for a total of 67.
Perk 1
Heating Up. Final blows with this weapon increase accuracy and stability while improving vertical recoil.
Perk 2
Moving Target. Increased movement speed and target acquisition when moving while aiming down sights.
Mod and Masterwork
Counterbalance Stock reduces recoil deviation by 15 for a total of 73. Range masterwork increases the range by 9 for a total of 58.

Now you know the roll for Piece of Mind for PVP. You can get this weapon by completing the new Season of the Risen activity PsiOps Battle grounds. You do need to be 1500 light level which is a high light level for a seasonal activity, but I managed to complete the activity below 1400. It just took some time. Load up or grab a 3-man fireteam and get to grinding Guardian.