FX DRS Classic — 4.5 mm (.177), 500 mm (50 cm)

• Type: Pre-charged pneumatic (PCP), modular DRS platform. 
• Caliber: .177 / 4.5 mm (also available in .22 and .25). 
• Barrel length: 500 mm (50 cm) (available options 500 / 600 / 700 mm). 
• Weight: ≈ 4.9–5.2 lbs (≈ 2.2 kg) for the 500 mm synthetic version. 
• Overall length: ≈ 927 mm (for 500 mm barrel). 
• Magazine (mini-magazine) capacity: .177 — 16 rounds (mini mag). 
• Air/plenum capacity: ≈ 208 cc (500 mm version) (modular over-barrel plenum disguised as a magazine). 
• Fill pressure (max): 230 bar (≈ 3335 psi) — use gauge/markings on reservoir and follow manual. 
• Shots per fill: ~58–66 shots (varies with pellet weight, power setting and regulator). OutdoorLife test reported ~58 shots average; retailers list 66 shots in .177. 
• Muzzle velocity (example): ~898 fps with 18.1-gr pellet (OutdoorLife test) — actual velocity will vary by pellet weight and tune. 
• Trigger: Two-stage, fully adjustable match trigger (adjustable pull/feel). 
• Cocking: Smooth side-lever action (side lever). 
• Barrel / liner: STX (superior) liner; rifled. 
• Scope mounting: 11 mm dovetail / Picatinny options (DRS commonly ships with a one-piece Picatinny rail option on some configs). 
• Thread: 1/2×20 muzzle thread (thread protector included on many builds).