ZEV Technologies PRO Glock Pistol Trigger Upgrade Bar Kit, Glock 17/19/19X/22/23/26, Curved, Black/Black, CFT-PRO-BAR-5G-B-B

Centennial Defense Systems MOD5 Upper Parts Kit For Gen 1-3 Glock 17, Black - Coated Rod, Flat Face Button Head Screw, 17Lb Spring, 50847

Meta Tactical Glock 17 Gen 3-4 Apex Carbine Conversion Kit, Grey, APEX-GFC-GY-17

Meta Tactical Glock 17 Gen 5 Apex Carbine Conversion Kit, Tan, APEX-GFC-TN-17G5

Centennial Defense Systems MOD2 Upper Parts Kit For Gen 1-3 Glock 17 W/Flat Face Screw, 11Lb Spring, White, 50585

Centennial Defense Systems MOD3 Upper Parts Kit For Gen 1-3 Glock 17, Tin, Gold - Coated Rod, Torx Screw, 24Lb Spring, 50703

Centennial Defense Systems MOD1 Upper Parts Kit For Gen 1-3 Glock 17 W/Allen Screw, 15Lb Spring, White, 50468