Description
SIG Sauer ProForce P320 M18 Gas Magazine (21 Rounds)
SIG Sauer ProForce P320 M18 Gas Magazine (21 Rounds)
Compatibility & Capacity
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Designed specifically for SIG Sauer ProForce P320 M18 (and cross-compatible with the P320 M17 and X‑Carry) gas blowback airsoft pistols
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Holds 21 + 1 BBs (21 rounds loaded, plus one in chamber) of 6 mm plastic BBs
Propellant & Construction
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Supports green gas (propane) and top gas; some retailers note CO₂ variants exist but green gas is standard
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Built from metal alloy with a polymer base plate, featuring authentic SIG Sauer trademarks for genuine OEM quality
Weight & Dimensions
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Weighs approximately 8.2 oz (~0.52 lb or 235 g) when empty
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Flush-fit design aligns with the pistol’s frame, maintaining proper balance and handling
Key Highlights
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Licensed OEM part — carries official SIG branding and engraving.
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Reliable feeding, backed by high-tension spring and metal alloy body; polymer base protects against impacts
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Semi-auto gas blowback compatible — continues the authentic recoil and slide cycling of the M18 pistol