Reinforced QD gearbox shell V2 with spring guide
Gearbox frame for ??MP5, M4, M16, G3, etc.. The holes for the bearings have a diameter of 8 mm, and the stainless steel bearings are included. The package also include metal spring guide with the bearing. An interesting feature of this gearbox is hot swappable springs. The spring guide can be unlocked by turning in locks and slides out. Spring guide is of course metal.
formerly known as APS Airgun Ltd was established in 2001. APS started by specializing in designing and building Simulation Training Equipment (Real Action Markers & Powder Balls for training simulation). APS - the three words stand for Accuracy - Pneumatics - Shooting. With their knowledge and experience that has been gained from making Real Action Markers and Projectiles, APS launched a new product line - Electronic Blow Back (EBB) products to spur the current Airsoft Market. Since they started producing airsoft replicas, their products have become very popular.