PM-84 (Makarov ammunition version), PM-84P (Parabellum ammunition version), PM-98, PM-98S (increased auto fire to 770 rpm), PM-06 (with top rail to mount optical sights with silencer use & 3 position straight stock)
Specifications
Mass
1.84 kg (PM-84) 2.17 kg (PM-84P) 2.30 kg (PM-98, PM-98S) 2.50 kg (PM-06)
Length
560 mm with stock extended / 354 mm stock collapsed (PM-84) 575 mm with stock extended / 375 mm with stock collapsed (PM-84P) 605 mm with stock extended / 405 mm with stock collapsed (PM-98, PM-98S) 615 mm with stock fully extended (3 position stock) / 392 mm with stock collapsed (PM-06)
Fixed, front post and rear flip-up sight with notch and aperture settings, 280 mm sight radius
The PM-84 Glauberyt is a Polish submachine gun. It is a personal weapon intended for combat and self-defence at ranges up to 150 m with single shot or fully automatic fire mode. It features a compact design, minimum overall dimensions, small weight, very good accuracy, and fire stability. It is designed for heavy weapons platoons personnel and reconnaissance detachments, special anti-terrorist and police troops.
In service with the Polish military and police it replaced the earlier PM-63 RAK submachine gun.
Operation
The Glauberyt is a select-fire, straight blowback-operated firearm that fires from the closed bolt position. Its design influence can be seen to mimic the Uzi. However it features a last shot bolt hold open/release like modern service pistols unlike any other submachine guns of its time. The PM-84/PM-84P also features ambidextrous charging handles on both sides (influenced by the vz.61 Škorpion). A two-bar retractable buttstock tucks right into the side of the weapon. The magazine release is in the heel of the pistol grip. The Glauberyt feeds from 15-round flush magazines and 25-round extended magazines. Fire selector Z = SAFE, P = SEMI, C = FULL AUTO, and sits above rear of the pistol grip. When the firearm is on SAFE, the bolt is locked and prevented from moving. A folding fore grip rests in front of the trigger guard (in the style of the PM-63 RAK), and an optional tactical flashlight/laser grip can also be mounted, replacing the folding fore grip.
Modern PM-98/PM-06 variants utilize a thumb magazine release. A new slot in the magazine is required to be cut out to work in the later Glauberyts.
PM-98: Model onwards, has the magazine release relocated to the thumb position, the charging handle is redesigned to be on the left side only, a more robust receiver and retractable butt stock, enlarged trigger guard for winter gloves, optional light/laser foregrip.
PM-98S: Special model where rate of fire increased to 770 rounds per minute in full auto.
PM-06: Features a new 3 position telescopic butt stock that pulls out straight, a see through MIL-STD-1913 top rail to facilitate optical reflex sights, hooded front sight.
PM96S: Civilian semi-automatic only model of the PM84P
BRS-99: Civilian semi-automatic only model of the Glauberyt.