Pro-Arms CNC Aluminum Threaded Outer Barrel for Elite Force GLOCK 19X CTM this deluxe edition comes with Ultra high quality of CVAR3MEP3045U Mechbox Pro Length:310MM

this deluxe edition comes with medium and large interchangeable backstraps

CNC machined pinion steel gear

They are great for airsoft

36G Our proprietary ingredients enhance the biodegradation of HighPowerAirsoft™ Enhanced Biodegradable BB in a biologically active landfill (appropriate facilities not available in all areas)

so by no means are they a poor quality option but they do produce less power and less efficiency than the CNC Black Warhead motor

Pro Arms CNC Aluminum Threaded Outer Barrel for Elite Force GLOCK 19X CTM this deluxe edition comes with Ultra high quality of CVAR3MEP3045U Mechbox Pro Length:310MM this deluxe edition comes with medium and large interchangeable backstraps CNC machined pinion steel gear