SA M4 Keymod (SA-F02 FLEX(TM) Gen.2) – Black / Tan

Technical Specifications

• Power type: AEG
• Material: Nylon, polymer, metal
• Length: 795–880 mm
• Weight: 2350 g
• Power: 120 m/s (1.48 J)
• Inner barrel length: 363 mm
• Inner barrel diameter: 6.03 mm
• Hop-up: Adjustable, TDC
• Fire mode: Semi, Full Auto
• Barrel thread: 14-mm CCW
• Handguard: KeyMod
• Recommended battery: 11.1V Li-Po (not included)
• Connector: T-Dean
• Battery type: Crane (Buffer stick, Nunchuk)
• Magazine capacity: 300 BBs (Hi-Cap)
• Motor type: Carbon

Package Contents

• Specna Arms M4 AEG rifle
• 300 BB Hi-Cap S-MAG magazine
• Flip-up sights
• Spare M90 spring for CQB
• Specna Arms stickers
• User manual

Warning

• Some brands produce overpowered springs (e.g. M130 may perform like M140–150) that may exceed the gearbox’s rated durability. Use only Specna Arms springs. For other brands, it’s recommended to use M120 springs to avoid potential damage from mislabeled products.
• When installing a spring with progressive winding, make sure the tighter end faces the spring guide and points outward from the gearbox.
• Never store the rifle with the battery connected.