Another submachine gun included in the defender's close range category is the Gruber 5. As a jack of all trades, master of none, the Gruber 5 is a well rounded weapon that can perform admirably in any scenario. With consistent vertical and horizontal recoil, it can go fully automatic for close range encounters, or be burst fired for effective mid-to-long range engagements.

While the Gruber 5 is a great beginner's weapon, it lacks defining features that might otherwise give it an edge over other weapons. Firing at 780 RPM, it fires faster than our rifles, but slower than the other submachine guns available. Much like the NACK-11, poor iron sights limit its ability to go head-to-head with dedicated long range weapons. Its rounds have low headshot bonus damage, and poor penetration, so aiming for the enemy's center of mass will likely score you more kills.