The Guarder KSC/KWA G17/18 Metal Outer Barrel w/ threaded 14mm CC thread adapter is the most effective way to increase the aesthetics of your G17 and G18. Nothing looks better on a the G series gas blow backs than an extended barrel with thread for a mock silencer.
The diameter of the outer barrel very close in size to the diameter of the front hole in the slide, some modification may be needed for this part to work.
it will not fit a glock 19 diffrent barrel size and it will stick out the end of the gun!! they do make glock 19 threaded barrels just have to look around other sites to find them looks great cant wait to buy one of these for my glock 18c!
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