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Discussion Starter · #1 ·
I have 3 factory Colt AR's, all three lower/uppers are fastened by a slotted screw. Can someone please tell me the factory torque spec. ,or range . I'm assuming it's in single digit inch lbs., possibly low teens. Also, what is a tool less upgrade. I believe they are 90's production..... Could there possibly be two different diameters ? Thanks in advance - Ed
 

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Thanks guys - 1911, your profession and interests represent quality . And Wheel , I knew you were the MVP after my first couple days of reading ColtForum
 
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