Umbral ATM Gearbox Steel Metal Gears Set AR15 / hk416/ slr /

AR15 / hk416/ slr / m4 AEG airsoft and gel blasters

Dimensions: 136*29*43

It's equipped with a large drum mag

Multi-position adjustable/retractable (depending on buffer tube)

Umbral ATM Gearbox Steel Metal Gears Set AR15 / hk416/ slr /Take your ATM gel blaster to the next level with the Umbral ATM Steel Gear Set. Designed and engineered by STARIVER, this professional grade gear set delivers exceptional durability, precision, and performance for serious gel blaster enthusiasts. Crafted from high strength steel using full CNC machining, these gears feature a Rockwell hardness of 4045 HRC built to withstand the stress of high power setups while maintaining smooth, reliable operation.