#1 The case

Combine with primary spring to soften recoil

Settable Shooting Control Unit (SCU) for multiple (1~20) round burst

Rifle output capable of 410 FPS for full range

Prometheus Fast Cycle EG Hard Gear 13:1 Airsoft HK416 #1 The caseEG Hard Gear 13: 1Rated for 400+ FPSExtremely strong forged Japanese steelMADE IN JAPANRedesigned bevel gear for improved semi auto responsePrecision machined, quiet gear mesh soundPerfect pairing with the Prometheus anti reversal latch and pinion gear The proven EG Hard Gear series with over 10 years of service are precision machined, made in Japan, heat treated, and forged to the highest standards. Due to such precision machining, you can expect a