Black Rain Ordnance Single Stage Drop-In AR15 Rifle Trigger 3.5lb pull. Black Rain Ordnance designed these Rifle Triggers with an extremely short reset time for rapid repeat firing. The Black Rain Ordnance Drop-In AR15 Trigger fits any mil-spec platform and is easy to install. Replace your factory trigger with a Black Rain Ordnance Single Stage Drop-In AR15 3.5lb Trigger and you'll want to take it to the range right away. Specifications for Black Rain Ordnance Single Stage Drop-In AR15 Rifle Trigger 3.5lb pull: Manufacturer: Black Rain Ordnance Color: Blue Trigger Shape: Traditional Curved Trigger Pull Weight: 3.5 lb Gun Model: AR-15 Additional Features: Includes KNS Anti Rotation Pins Condition: New Trigger Installation Type: Drop-In Features of Black Rain Ordnance Single-Stage Drop-In AR15 Rifle Trigger 3.5 lb Pull w/ KNS Pins BRO-DIT: Single Stage Drop-In Trigger. 3.5 lb. pull is half the pull of factory mil-spec trigger. Crisp feel. Extremely short reset for rapid firing. Includes KNS anti-rotation pins. Durable and reliable. Fits any mil-spec AR platform. Easy to install no gunsmithing required. Package Contents: Black Rain Ordnance Single Stage AR15 Drop-In Trigger Upgrade 3.5 Pound Pull BRO-DIT KNS Anti-rotation pins Allen wrench What firearm models does the manufacturer say Black Rain Ordnance Single Stage Drop-In AR15 Rifle Trigger 3.5lb pull is compatible with? The manufacturer suggests that Black Rain Ordnance Single Stage Drop-In AR15 Rifle Trigger 3.5lb pull is compatible with AR-15Black Rain Ordnance BRO-DIT: Single Stage Drop-In Trigger for AR-15 Rifle 3.5lb Pull KNS Pins