Optimized Carrier Key Screw (OCKS)
Many AR15 brands these days come with inferior carrier key screws. Even
some bolt carriers that have "OK" staking will still suffer from the screws
coming loose because the manufacturer has used Asia-sourced screws with
heads featuring knurling that is knurling in name only (shallow, rounded,
wimpy "knurling"), which does not come near the top of the screw's head
where the staking will be. Further, the top of the screw head is well
rounded and downright shiny. In other words, there is nothing there on the
screw head for the staking job to engage in. Result: loose screws just as
if they had not been staked at all, and your gun stops working. The OCKS is
purpose-made for the AR15 application and features "real" knurling that
goes all the way to the top of the head, which is not rounded. Plus, there
are twelve splines on the head giving depressions and projections for
carrier key metal to stake/flow into and engage like gear teeth-- giving
the best possible retention of carrier key screws. These are US-made and
being recognized by some manufacturers as the new standard.
![Click for detailed view.](photos/DSC02558_tn.jpg)
![Click for detailed view.](photos/DSC02601_tn.jpg)
Add $5 for First Class and $10 for Priority Mail:
- 6 / $18.00
- 12 / $30.00
- 24 / $48.00
- 50 / $88.00
- 100 / $130.00
- 200 / $175.00
- 500 / $330.00
For production quantity pricing, please contact me.