And differently sized Panzerschrecks, there were 3 of em.
ACHTUNG! There were 3 different Panzerfausts, not Panzerschrecks!
"Panzerfaust 30 Klein
The "Panzerfaust 30 Klein" (Klein meaning small) was the original version, first delivered in summer 1943. The "30" was indicative of the nominal maximum range of 30 meters. It had a 4.4 cm diameter tube containing 95 g of propellant which launched a 2.9 kg projectile carrying 800 grams of explosive. The projectile travelled at just 30 meters per second. It could penetrate 150mm of armor. The complete weapon weighed 3.25 kg.
Panzerfaust 30
An improved version of the Panzerfaust Klein appearing at the end of 1943, this version had a larger warhead for improved armor penetration (200mm) but the same range of 30 meters.
Panzerfaust 60
This was the most common version, and production started in August, 1944. It had a much more practical range of 60 meters, although with a muzzle velocity of only 45 meters per second it would take one and a third of a second for the warhead to reach a tank at this range. To achieve the higher velocity, the tube diameter was increased to 5 cm and 134 g of propellant used. It also had an improved sight and trigger mechanism. The weapon now weighed 6.1 kg. It could defeat 200mm of armor.
Panzerfaust 100
This was the final version produced in quantity, from November 1944 onwards. It had a nominal maximum range of 100 meters. 190 g of propellant launched the warhead at 60 meters per second from a 6 cm diameter tube. The sight had holes for 30, 60, 80 and 150 meters, and had luminous paint in them to make counting up to the correct one easier in the dark. This version weighed 6 kg and could penetrate 220mm of armor.
Panzerfaust 150 and 250
The Panzerfaust 150 was deployed in limited numbers near the end of the war, and was a greatly modified design. It had the same amount of propellant as the Panzerfaust 100 but a redesigned warhead and two stage propellant ignition gave it a higher velocity of 85 meters per second and increased the armor penetration. It was intended to be reused for up to ten shots, and production started in March 1945, two months before the end of the war.
Panzerfaust 250 was planned to enter production in September 1945 but the war ended before development had been completed. "