PDI 6.01mm SUS304 Stainless Steel Precision Tight Bore AEG Inner Barrel LENGTHS:360mm Uses all standard M4 airsoft

Uses all standard M4 airsoft magazines and parts

and other attachments

eu/GCS  The USB connection is better than the programming card

possibly others

For those looking to start sniping but aren't sure if its for them

PDI 6.01mm SUS304 Stainless Steel Precision Tight Bore AEG Inner Barrel LENGTHS:360mm Uses all standard M4 airsoftDESCRIPTION: High quality SUS304 stainless steel construction minimizes vibration Precision tightbore 6. 01mm (+ 0. 002mm) inner diameter Improve accuracy and consistency of your gun Smooth polish to reduce friction Improved air seal and compression increases power Made in Japan Manufacturer: PDI Specifications: Material: SUS304 Stainless Steel Inner Diameter: 6. 01mm Compatibility: Tokyo Marui and Other Compatible Airsoft AEGs