One is the standard 330 round hi-capacity magazine

BUILD: POLYMER BODY AND BARREL ASSEMBLY

The MCR features a micro-switch programmable trigger system combined with a straight trigger and enhanced trigger guard

Recessed Cut For magazine catch provides easy reach and avoids accidental drops

Lancer Tactical 6.02mm Pistol Tight Bore Inner Barrel, 112.4mm ssp18 One is the standard 330SPECIFICATIONS Manufacturer: Lancer Tactical Inner Diameter: 6. 02 mm Length: 112. 4 mm Weight: 24g Color: Silver Compatibility: Compatible with Tokyo Marui, KJW, and Other Compatible GBB Airsoft Pistol FEATURES Increased range accuracy High polish internal bore Tight air seal design Package Includes: 1x Inner barrel