Airsoft Masterpiece Aluminium Rear Sight with Fiber for Hi-CAPA - STI HPA Accessories These also accommodate the use

These also accommodate the use of longer inner barrels to give you a FPS boost

Fitting to allow use of lines from your reg

Steel and Delrin for improvements in stability

The GEN 2 Inferno is the culmination of a great deal of work to take the next step forward in the development of HPA technology

C-more red dot - Many more way fit with the same screw profile)

Airsoft Masterpiece Aluminium Rear Sight with Fiber for Hi-CAPA - STI HPA Accessories These also accommodate the usePerfect replacement for the stock 5. 1 sights. Rear Fiber for easier target acquisition. Stronger construction and increased slide speed due to weight!