AR-15 Two-Stage Triggers

http://blog.cheaperthandirt.com/ar-15-two-stage-triggers/?utm_source=newsletter&utm_medium=social&utm_content=09052015chronicle&utm_campaign=20150902-ar15twostagetriggers

 

#AR-15, #AR15, #AR-40, #AR40, #AR-45, #AR45, #AR-9, #AR9, #AR-16, #AR16, #M-16, #M16,