Rechambers the JAR-5 to the P/40-K Bolt Pistol's explosive gyrojet.
The round leaves at 450 m/s and is gone at 360 m. Recoil is 0.60× the stock rifle, both spreads are 1 higher, and you carry 4 spare magazines. The gun still holds 15 rounds and fires at 250 rpm.
The warhead is the bolt pistol's: 325 on the hit and 175 from the blast. Full blast damage is inside 1 m, falling off through 3.5 m, with the shockwave out to 5 m.
This is a gameplay mod. Everyone in a co-op group needs this same version.