Trilogy Select Fire Competition Dust Black WGP Select Fire Trilogy Competition Dust Black Features: Lightweight unibody design Closed bolt accuracy Air efficient operation Angled bottom-line Vertical air receiver Nickel aluminum bolt Anodized finish Velocity adjuster Improved integrated 3-way, no front block! High performance low pressure regulator Pull-pin Micro polished ram Push button safety Preset nickel inline regulator Wrap around grips 14 inch ported barrel Single trigger Select Fire model - Semi auto, Full auto, Ramping mode, Demo mode, and 3 shot burst.