The Arms Magazine got a unit of the Tokyo Marui M4A1R AEG to try... "In recent years, survival games (Junior Gun Battles or 10-Kin Gun Survival Games) using air guns for ages 10 and up (hereafter referred to as 10-year-old models) that can be enjoyed by adults as well as teenagers have become popular. The 10-year-old models used in these games have a firing power (less than 0.135 joules) that meets the safety standards of the Youth Development Ordinance, so they have low accuracy at long distances, and many of them use plastic parts, are deformed, or downsized, making them look more like toys than models for ages 18 and up (hereafter referred to as 18-year-old models). Tokyo Marui has released an air gun that overturns the common sense of 10-year-old models. Its name is the "Electric Gun R Series." The first in this series, which has the same "R" name as the company's gas blowback R series, is the Colt M4A1 Carbine, which is the most popular 18-year-old model."