Luth-AR AR-15 Trigger Trainer Left Black. Specifications for Luth-AR AR-15 Trigger Trainer: Manufacturer: Luth-AR Gun Make: AR Platform Gun Model: AR-15 Color: Black Finish: Hardcoat Anodized Fabric/Material: Aluminum Weight: 0.5 oz Additional Features: Left Hand Features of Luth-AR AR-15 Trigger Trainer Correctly positions the pad of your trigger finger Consistent repeatable placement builds muscle memory Trigger wall prevents accidental interference of trigger Lightweight Aluminum Hardcoat anodized Package Contents: Luth-AR AR-15 Trigger Trainer Steel screws for easy installation What firearm models does the manufacturer say Luth-AR AR-15 Trigger Trainer is compatible with? The manufacturer says that Luth-AR AR-15 Trigger Trainer is compatible with AR-15Luth-AR TT-01L: AR-15 Trigger Trainer Left Black