The MG 151/20 is a 20mm German autocannon produced by Waffenfabrik Mauser during the Second Weltkrieg to arm its fighter planes. It is a recoil-operated, open bolt weapon which could fire at 600-750 rounds per minute. These autocannons were widely used as fixed weaponry, in flexible mounts and within turrets across the Luftwaffe, becoming the mainstay air-to-air weapon of the war. However, like other products of the war industry, the MG 151/20 used plain bearings and was issued cheap lubricants, giving it infamy as a relatively unreliable instrument. Contemporary Oceanykan airmen consider the MG 151/20 a classic, a "getting the job done" kind of machine.

MG 151/20
Abilities
Common Attributes - Mechanical
Auto
This weapon is fully automatic, either inherently so or by the presence of a selective-fire mechanism.
EFFECT:
This weapon can fire more than one shot each time it is used. Each subsequent shot has a progressive penalty.
Automatic weapons are considered STABLE when they're mounted on a vehicle, tripod or turret. This is different from the Stabilised SA.
- Point Blank Range - No penalty.
- Close Range (≤10m / 2sq) -> -1
- Short Range (≤50m / 5sq) -> -2 (STABLE: -1)
- Average Range (≤200m / 10sq) -> -3 (STABLE: -1)
- Medium Range (≤500m / 20sq) -> -5 (STABLE: -1)
- Long Range (≤1000m / 50sq) -> -5 (STABLE: -3)
~ Beyond this point, automatic fire is unfeasible without a STABLE firing platform. ~ - Very Long Range (≤2000m) -> (STABLE: -3)
- Extreme Range (>2000m) -> (STABLE: -5)
Belt-Fed
EFFECT:
This weapon is not fed from fixed capacity magazines, but from belts which can be made as long or short as needed.
Most machinegun belts contain 50, 100, 200 or 250 rounds. Some vehicle belts, however, can be way longer.
Unless specified otherwise, assume all small arms belts to be of 100 rounds.
Common Attributes - National
Panzerjägerkanone - German Artillery (WW2)
German anti-tank artillery and tank cannons were infamous in the Second Weltkrieg as well-built machines capable of stopping Soviet armoured offensives dead in their tracks, literally.
EFFECT:
For each vehicle this cannon destroys, add an Easy DM to its hit rolls until combat ends (this bonus can stack indefinitely).