the T-REX 9 is backwards compatible with all previous Classic Army Nemesis series AEG upper receivers

Safety (programmable to 3 round burst)

Flow Control

High Performance Internals

Structured and Padded throughout to protect your HPA Tank from field elements

Elite Force H&K USP Compact Gas Blowback GBB Airsoft hand stop the T-REX 9 is backwardsThe H&K KWA USP Compact is the compact version of the USP Full size designed for CQB situations. The real steel USP compact is widely preferred and used by US law enforcements. The UPS Compact is equipped with the new NS2 system and H&K full trade mark licensing giving you great performance and realism. The NS2 internal gas delivery system is a KWA patented design that utilizes an advanced lightweight composite gas piston with a two stage internal