Our take: This DBoys R36 mid-cap has a 130-round capacity, and universally fits R36C, R36K, and R36E. Compatible with Echo 1, JG, Classic Army and TM R36 AEGs. Good quality and excellent finish. Quality manufactured by DBoys. Comparable mid-cap mags for R36 sell for $22+, get yours here for less. The DBoys model, when compared side by side with more expensive models, is identical in fitment, build quality, and material. Features: - 130-round capacity for ultimate realism, PERFECT for tactical training and/or airsoft games/fields/competitions that do not allow hi-cap magazines - High precision feeding - Does not require winding - Requires speedloader/BB loading tube to load