AirTac Customs Aluminum Endcap Color:SILVER Quick-change spring system allows for

Quick-change spring system allows for easy spring changes without needing receiver disassembly

Full length top rail for optics and front rail system for tactical accessories

M-LOK® & KEYMOD™ Short length PICATINNY (3 Slot) accessory rail

 Piston Material: Reinforced Polymer (Nylon + 33%FG)

AirTac Customs Aluminum Endcap Color:SILVER Quick-change spring system allows forAluminum Endcaps are here! Want to add a little spice to your ESG build? We now have the very first aluminum endcaps in stock! No more SLS, no more 3D printing. All our endcaps are now made with 6061 aluminum and anodized in 6 colors! AirTac Customs endcaps are a great way to finish off any ESG build to cover up buffer shafts! This AirTac Customs Aluminum Endcap includes: AirTac Customs Aluminum Endcap: Anodized in a high quality matte finish