This is a performance upgrade kit for Hi cap airsoft pistols like the Tokyo Marui Hi cap. If you want you gun to shoot amazing this is the kit to choose. All these parts are high quality and improve the accuracy, range, sensitivity, and consistency of your pistol of choice. The package includes------- -AIP 140% Enhance Loading Nozzle Spring for TM 5.1/4.3/1911 × 2 -AIP Aluminum Trigger (Type R) for Marui Hicapa (Short) × 1 -Stainless Steel Spiral Outer Barrel for 5.1 Hi-Capa × 1 -Airsoft Masterpiece Steel Guide Rod for Hi-CAPA 5.1 × 1 -AIP Stainless Steel Trigger Ring for Hi-Capa × 1 -AIP CNC Brass HOP-UP For Marui Hi-capa/1911 × 1 -Maple Leaf 2021 Desepticons Hop Up Bucking × 1 -Nineball Power Barrel 6.00mm Ultratight bore × 1 -PinkMood Enhanced Loading Nozzle Set × 1 -AIP 120% / 140% Enhanced Recoil/Hammer Spring for Hi-CAPA × 1 -AIP 7075 Grip Screws For TM 4.3 / 5.1 × 1 -Laylax Slim Grip R for Tokyo Marui Hi Cap 5.1 / 4.3 × 1 Keep in mind these parts should be installed by someone that is good ad doing airsoft stuff but it can be done even by someone who doesn't understand airsoft if they follow YouTube instructions that are free too look up! ANY QUESTIONS FEEL FREE TO ASK