Geo-Specific Features: Spool valve design Low reciprocating mass - bolt 18g Low pressure operation - 110 to 135 psi Air efficient - 1500+ shots from 68/45 1 moving internal part Minimum number of dynamic seals - 3 ISCIS (Innovative Solenoid Controlled Isolation System) mechanism VVC - Variable Volume Chamber adjustment SC (Spool-Cure) Bolt - helps eliminate 2nd ball clipping in the feed stack 6 second strip down - to remove and separate all internal bolt components Tool-less bolt removal - all internal bolt components removable without tools Very low weight - 860g inc. barrel, battery, OOPS, etc Eclipse Family Features: BBSS (Break Beam Sensor System) Black-on-white transflective LCD module Def-Tek offset feed C-Lever clamping feedneck Dual selectable trigger switching - opto and micro switches Dual trigger return mechanisms - spring and magnetic return Integrated audible beeper for alarms and actuations Capped and uncapped ramp modes All major tournament presets 9 preset debounce modes 5-point adjustable trigger T-rail mounting system OOPS - On/Off/Purge ASA system S3 self-purging in-line regulator 14 inch Shaft 2-piece barrel - .693 bore size