Technical information

Practical A.E.G Upgrade 2006

In fact, there have been debates all over the airsoft communities regarding the

issue of air volume balancing. It is believed by many that the volume of the

barrel should not exceed the volume of the cylinder if FPS drop is to be avoided.

It has also been said that the more appropriate

cylinder-volume-to-barrel-volume ratio is around 1.5:1 (or 2:1 for type-0

cylinder). Even though different setups can produce totally different results

(thus making it difficult to make accurate and precise judgment on the argued

topic), generally speaking you should stick with the rule that the cylinder volume

HAS TO BE LARGER than the barrel volume. You may reference the configuration

information provided by Systema or the like when judging the correct “ratio” to

deploy.

What is a quick and easy way to determine the cylinder to use for an extended

barrel? Refer to the barrel length table below. If, let’s say, you want your MP5K

to use a 229~230mm inner barrel, then simply put in a cylinder for the MP5 A4

model.

110 mm - used by MP5K

141 mm - used by MP5KPDW

229 mm - used by MP5A4/A5/SD5/SD6

245 mm - used by UZI

247 mm - used by CAR15, P90, G36C, SIG552, AK B-S

285 mm - used by MC51

300 mm - used by Thompson, M733

363 mm - used by M4/RIS, SR16, XM177, SIG551

369 mm - used by HK51

455 mm - used by AK47, AK47S

469 mm - used by G3A3/A4/SG1

472 mm - used by FAMAS

509 mm - used by M16A1/A2/VN, AUG

534 mm - used by SIG550

590 mm - used by PSG-1