Glock G20/21 Gen 4 Modular Backstrap Replacement Kit

OEM Gen 4, Modular Backstrap Replacement Kit, Fits 20, 21 Gen 4, Black 30819 Specifications for Glock G20/21 Gen 4 Modular Backstrap Replacement Kit: Manufacturer: Glock Color: Black Gun Model: Glock 21, Glock 20 Model Generation: 4 Package Contents: Glock G20/21 Gen 4 Modular Backstrap Replacement Kit