Messerschmitt Bf.109G, German users, part two

The Bf.109G-1 was produced from February 1942 and was the first production version of the G variant to have a pressurized cockpit. Additionally, the angled armour plate for the pilot's head was replaced by a vertical piece which sealed-off the rear of the side-hinged cockpit canopy. Also, some small triangular armour-glass panels were included into the upper corners of that armour, although in some aircrafts, that plate was made out of solid steel.
In order to absorb any moisture trapped in the double glazing, silica gel capsules were placed in each pane of the windscreen and opening canopy.
As the Bf.109G-1 started to be slightly outdated, the last 80 of them were built in the Bf.109G-1/R2 sub-variant which used the GM-1 nitrous oxide boost, had pilot's back armour removed and hadn't any fitting for long-range dropping tanks. Some of them are known to have been armed with underwing 20mm MG 151/20 cannons.
The Bf.109G-2 started production first in May 1942 and lacked both cabin pressurization and GM boost. In terms of performance it was identical to the G-1. The canopy had only one layer of glazing and incorporated the angled head armour which had already been seen in the Bf.109F-4, although many G-2 had the vertical type just like the G-1. As all of them, it was very versatile and accepted many field modifications, and had two of them planned, which we will deal with them in a later post.
The rack and internal fuel lines for a 800L (80 US gal) were widely used on the G-2s as well as the underwing 20mm MG 151/20 cannon gondola and many models were fitted with the ETC 500 bomb rack which could carry a single 250kg (550lb) bomb. The last production batches of the G-2 were fitted with a sand filter in the air intake and were named as Bf.109G-2/Trop. This sub-variant had also two small tear-shaped metal brackets on the left side of the fuselage, just below the cockpit still to fit sun-umbrellas used to shade the cockpit when stationed.
A total of 167 G-1s were built between February and June 1942, 1586 G-2s between May 1942 and February 1943 and a further batch was built under license at Györ, Hungary in 1943. The G-2 had a maximum speed of 537 Km/h (334 mph) at sea level and 660 km/h (410 mph) at 7000m high (22970ft). The performance of the G-1 was similar but as it had a boost system, it could achieve additional 350hp which managed to get the airplane, a Bf.109G-1/R2 a to speed of 660Km/h (420mph) at 12000m (39370ft) with a ceiling of 13800m (45275ft).

Sources:
1. https://en.wikipedia.org/wiki/Messerschmitt_Bf_109_variants#Bf_109G
2. Salamander Books - The Complete Book of Fighters