[Mantis]

The headd space is way off in my FN FAL The gunsmith stopped on indexing the barrel.
I mic'd my shoulder lock and it is .264 it needs to be bigger. Where do I buy the shoulder locks?

 

[plonker]

Do you mean the "locking shoulder" (the "D" shaped pin that passes through the receiver)?

Try :
http://gunthings.com/
"upper receiver parts" > locking shoulder (please specify size) for $29.00.

 

[JP1]

Another source that I have used. He makes custom locking shoulders. http://www.vandenbergcustom.com/