HK Army Performance Series - MP5 Regulator 450psi - 550psi - BlackThe HK Army MP5 Regulator, meticulously crafted for reliability and ease of use. Engineered with a constant output air flow, this regulator effortlessly screws onto compressed air bottles, ensuring seamless performance on the field. Constructed from durable aircraft grade aluminum, it features knurled machined detailing on the bonnet for enhanced grip and aesthetics. Set at a output pressure of 450 550 psi, this regulator offers versatility and