Here's the deal, post any acronyms & their definition (that haven't already been posted) and I will add them to this list, then when we have a full list I will sticky it for all to read & understand. All credit goes to Dante. AEG = Automatic Electric Gun AEP = Automatic Electric Pistol EBB = Electric Blowback (I recommend avoiding like the plague) GBB = Gas BlowBack NBB = Non Blow Back LPEG = Low Power/Price Electric Gun (Plastic gears, low FPS, not worth it) MPEG = Medium Priced Electric Gun (Some use this term to describe LPEGs, others for chinese AEGs) TB = Tight Bore (Inner Barrel) DMR = Designated Marksman's Rifle mAh = Milliamp Hours. (How long a battery can supply 1 milli Amp at the rated voltage per second) Lipo = Lithium-ion polymer battery. (Almost perfect charge/discharge efficiency ~ 99.8%) Cheapsoft/Chinasoft = Chinese made airsoft weapons from companies such as JG, Cyma, WELL etc. ACM = All China Made (Same meaning as Cheapsoft) Brands: G&G = Guay Guay G&P JG = Jing Gong ( Also Echo 1 & Golden Bow) CM = Refers to G&G Combat Machine or when followed by a . & a number normally refers to Cyma models. E.g CM.036 CA = Classic Army TM = Tokyo Marui PTW = Proffesional Training Weapon. Arguably the most realistic airsoft weapons available. Made by Systema CTW = Celcius Training Weapon, a 'clone' of the Systema PTW except with a significantly lower price tag. Note: Wierd terms such as "All China Made" and "Automatic Electric Gun" which do not seem completely correct in English are exactly that, they are incorrect due to direct translation. However the terms have stuck & everyone can easily understand their meaning provided they know what the acronym stands for.