G&G - GR25 SR25 Magazine 120rnd Metal Mid-Cap - Grey is an Airsoft SR-25 6mm BB Gun Style Magazine designed and built by G&G for their GR25 Range of rifles. The Magazine is constructed with Polymer Internals, with an Alloy outer shell, which is finished in a Gun Metal Grey Colouring. The Magazine is of a Medium Capacity, also known as a Mid Cap Magazine, which means that BBs are loaded into the top of the magazine using a Speed loader, and then fed using a Spring System, meaning no winding or rattling. The magazine externally features an Alloy Shell, giving it a more realistic appearance and feel, and is finished in a Gun Metal Grey colour for a realistic finish. This magazine is perfect for those who own a G&G GR-25, and are looking for the official magazines which fit their weapon perfectly.