Timney Triggers Alpha Competition Trigger Anodized Finish Silver Fits Glock Gen 5 20/21/29/30/40/41 Alpha Glock 5-Large-Silver. 45 ACP 10mm Auto Gun Make: Glock Gun Model: Glock 21 Glock 30 Glock 29 Glock 20 Model Generation: 5 TIMNEY ALPHA GLOCK 5-LARGE-SILVER GLK GEN5 ALPHAGLOCK5LARGESILVER What firearm models does the manufacturer say TIMNEY ALPHA GLOCK 5-LARGE-SILVER GLK GEN5 ALPHAGLOCK5LARGESILVER is compatible with? The manufacturer suggests that TIMNEY ALPHA GLOCK 5-LARGE-SILVER GLK GEN5 ALPHAGLOCK5LARGESILVER is compatible with Glock 20 Glock 29 Glock 30 Glock 21