Sig Sauer MPX-K Sportsline Magazine (120 Rounds)

Stay in the fight longer and master rapid magazine swaps with the Sig Sauer MPX-K Sportsline Magazine (120 Rounds)! Engineered specifically for the officially licensed Sig Sauer MPX-K Sportsline series electric airsoft rifles, this factory-style mid-cap magazine is an essential accessory for any operator looking to expand their loadout capacity and maintain seamless feeding during intense skirmishes.

Durable Polymer Construction & Authentic Aesthetic Crafted from high-density, impact-resistant polymer, this magazine is built to survive the rigors of active field play, accidental drops, and rapid CQB maneuvers. It features a translucent dark finish paired with detailed internal dummy cartridge detailing, mimicking the exact appearance of a loaded 9mm Submachine Gun magazine. The external textured gripping surfaces allow for a secure hold when drawing from tactical magazine pouches, even in wet weather conditions or while wearing thick gloves.

Rattle-Free 120-Round Mid-Cap Reliability Unlike traditional high-capacity (hi-cap) magazines that require constant wheel winding and make position-revealing rattling noises when moving, this 120-round mid-cap operates silently. Powered by a premium high-tension internal spring and smooth follower channel, it feeds BBs consistently into your AEG's hop-up unit at high rates of fire. Without loose BBs sloshing inside a reservoir, you can sprint, flank, and clear rooms stealthily while knowing your primary weapon will feed every round without misfires or double-feeding issues.

Seamless Compatibility & Fast Reloads Designed to match the original factory specifications of the MPX-K Sportsline AEG, this magazine inserts smoothly into the receiver magwell and locks into place with zero wobble. The responsive magazine catch notch allows for crisp, intuitive drops during emergency reloads. Stocking up on spare 120-round mid-caps ensures you meet strict MILSIM event requirements while giving you the volume of fire needed to suppress enemy positions during dynamic fire-fights.

Whether you are building out a lightweight submachine gun loadout, prepping for an all-day MILSIM event, or simply adding reliable spare magazines to your kit, the Sig Sauer MPX-K Sportsline Magazine (120 Rounds) provides the durable performance, quiet operation, and realistic looks required to dominate the field.