O-ring set for Hi-Capa charger injection valve GBB Marui AIP

AIP is a reputable brand in the making of very good quality and colourful custom GBB parts and accessories, particularly for GBB Hi-Capa type replicas.

Here we find a set of o-ring for injection valve for Hi-Capa 5.1 / 4.3 GBB Tokyo Marui magazine. Ideal for upgrading your replica handgun magazines!