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5 Areas Of Concern In The AR-15 Build

Lost me at the barrel nut. Claims to tighten to 35ft.lb. min, prefers 40 to 50. Says 80 In. lb is too much. 80 In. lb is only 6.66 ft lb.
 
I have a new end plate coming that will allow me to put a single swivel sling on my PSA 300 BO pistol.
The plate/castle nut are secured by the use of a set screw rather than staking. Anxious to see how
badly it fails.....

end plate.JPG
 
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