GHOST INC. LOW-PROFILE(LO-PRO) Magazine release this Ghost invention gives you a speedy magazine release to insure very quick reloads with a very low profile-you need speed when you reload. Our LO-PRO design insures the magazine release is rapidly accessible and pressed without the possibility of accidently dropping your loaded magazine. This Ghost only product uses our patent pending design that does not require you to cut up your Glock frame!! Again it does not require you to cut up your Glock's frame!!! The LO-PRO is easily dropped in with no modifications to your Glock. To install the LO-PRO place the pistol on a hard surface with the left side facing up hold the release button in a pair of plyers or vise grips and press into place (see photo). Note: Will not fit Glock model: 20/21/21& 20SF/29/30/36 & GEN 4's.