AR15-New Screws in Carrier Key ?

[louielouie]

I read somewhere that if you loosen the carrier key screws ( on an AR15) for any reason, that you should replace them with new screws and torque to specs.

I know when torqueing head-bolts on a car that the screws stretch each time you tighten them, and I assume the carrier key screws stretch as well.

I ordered some new screws from Brownells but they did not fit, so I re-torqued my old screws to 60 inch pounds and staked them in 3 places.

I ordered a new key and screws from PSA, so I have them in case the old ones start to loosen or ?

Do you think I need to change out the screws as soon as I get the ones from PSA?

louielouie

p.s. Before you get on me about the torque value of 60 inch pounds on the carrier key screws; when I started looking I found a range from 30 to 35 inch pounds all the way up to 85-90 inch pounds.

 

[MtnBiker6510]

If they are properly torqued and staked you should be good to go.

I had the screws on my Olympic AR carrier key loosen after about 2k rounds and cause cycling problems. I retorqued them and staked them and its been another 3000rds since. No issues.