The SJ SiJun DDM4 PDW Gel Blaster blends modern PDW styling with solid internal engineering, making it an excellent choice for players who want compact size without sacrificing performance.
Featuring realistic blowback, mag prime, and empty-hang function via charging handle, this blaster offers immersive handling and smooth operation. Powered by an 11.1V Tamiya LiPo, the DDM4 PDW consistently delivers around 250 FPS, suitable for fast-paced CQB and backyard gameplay.
Its collapsible PDW buttstock and anti-slip ergonomic pistol grip provide comfort and adaptability across different shooting styles, while extensive metal internal and external parts ensure durability and longevity.
⚙️ Key Features
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Realistic blowback system
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Mag prime for reliable feeding
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Pull charging handle to activate empty hang
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Collapsible PDW-style buttstock
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Anti-slip ergonomic pistol grip
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Dual fire modes: Semi / Full Auto
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Compatible with JingJi PMAG magazines
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XT-ready PDW platform with solid build quality
🔩 Metal Components
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Metal gears
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Metal inner barrel
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Metal outer barrel
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Metal muzzle
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Metal trigger
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Metal charging handle
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Metal bolt catch
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Metal fire selector
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Metal magazine release
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Metal dust cover
📊 Specifications
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Brand: SJ SiJun
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Material: Nylon body
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Gear Material: Metal
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Fire Modes: Semi-auto / Full-auto
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FPS: ~250 FPS
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Ammo: 7–8mm gel balls
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Battery: 11.1V LiPo (Tamiya plug)
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Weight: 1.5 kg
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Size: 58.5 × 26.5 cm
📦 Package Includes
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1 × SJ SiJun DDM4 PDW Gel Blaster
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1 × Magazine
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1 × Muzzle
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1 × Pack of gel balls
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1 × Safety glasses
⚠️ Battery & charger not included unless stated otherwise
✅ Why Choose the SJ SiJun DDM4 PDW?
✔ Compact PDW form factor
✔ Reliable 250 FPS performance
✔ Realistic blowback & empty-hang function
✔ Strong metal internals
✔ Ideal for CQB & fast gameplay