Pearce Grip is a company based in Texas producing the highest quality grips available in the USA. They specialize in replacement grips for your firearm and are expanding their offerings to ensure they have what you want and need. Their products are sought after world wide because of their functionality and rugged dependability. In an age when things are mass produced over seas it is comforting knowing that Pearce products are manufactured in the USA. Allows use of factory interchangeable backstraps.Keeps debris out of the rear cavity of frame. Easy install. Fits: Gen 4 GLOCK 26 27 33 39.