Action Army 6.01mm AEG Barrel 590mm vertical grip This is the GEN 4

This is the GEN 4 edition of the full frame Glock 17

Internally programmable Mosfet unit for 3-round burst and other options

Dimensions:  23 1/8" long

and possibly the CZ SP01 style models perfectly

This kit also includes a 70 degree bucking already installed along with a full black metal outer barrel (14mm CW threaded) and metal flash hider

Action Army 6.01mm AEG Barrel 590mm vertical grip This is the GEN 4The Action Army 6. 01mm AEG Barrel 590mm. Fits inside AEGs that require this length. This is a 6. 01 inner barrel diameter is very precise. A very popular choice as an alternative to the Prometheus. One piece high grade metal machined. Precision smooth inner bore with nickel plating. This inner barrel is an upgrade to improve your gun's performance, accuracy, FPS, and range compared to stock gun barrels.