Top Picatinny/Weaver Rail for Mounting Optics

DWELL TIME: PROGRAMMABLE

This Polymer Airsoft gun features many of the same benefits of it's predecessor

Optically correct high definition dual-pane thermal lens to prevent any possible fogging

Elite Force HK 416 CQB AEG 320RD High-Capacity Magazine Backpack Top Picatinny/Weaver Rail for MountingUmarex 300rd H&K Hk416 Hi Capacity Magazine for M4 M16 Series Airsoft AEG Rifles Fully Licensed by H&K Laser Engraved Trademarks Winding Requires Specialty Tool (tool included) Steel Outer Casing High Strength Polymer Internals Compatibility: Works with Tokyo Marui, Umarex, G&P and other compatible M4 M16 Series Airsoft AEG Rifles Capacity: 320rds Manufacturer: Umarex (Licensed by H&K) Why Hi Cap Magazines? A High Capacity Magazine (AKA "Hi Cap")