Glock Gen 4 20/21 Beavertail Backstrap Kit Polymer Black

The Glock Gen 4 Modular Backstrap Replacement Kit Beavertail is a set of polymer backstraps for Glock Gen 4 pistols. It is designed to replace lost or worn backstraps and to let the owner change the grip profile.

The kit is listed for the Glock 20 and 21 Gen 4, with a second listing for the 40 and 41. Its calibers are 9mm Luger, 40 S&W, 10mm Auto and 45 ACP. The parts are black polymer and are described as factory replacements made to the same specifications as the originals.

The bundle includes two standard backstraps, two beavertail backstraps, a trigger housing pin and an installation tool.

• Brand: Glock
• Model: Gen 4 Modular Backstrap Replacement Kit Beavertail
• Fits: Glock 20/21 Gen 4 (also listed for 40/41)
• Calibers: 9mm Luger, 40 S&W, 10mm Auto, 45 ACP
• Material: Polymer
• Color: Black
• Kit contents: 2 beavertail backstraps, 2 standard backstraps, trigger housing pin, installation tool