SCP is incompatible with KAC E3 bolt.
SCP / ICP (Indexed Cam Pin) features a machined dimple on one side of the carrier cam pin, so the user can always reinstall the cam pin on the carrier in the same orientation. Cam pin usually wears more heavily on one side, putting the cam pin in one direction, then another randomly creates uneven wear on the cam pin, and it becomes sloppy and loose in the bolt. When the cam pin is installed always facing the same direction, it leaves one side less worn and more intact, this has the effect of better maintaining a tight fit of the cam pin in the bolt, and reduces wear cam pin itself as well as on the cam pin bore on the bolt.
The idea of SCP / ICP, or consistently reinstalling the cam pin in the same orientation, isn't so much about saving the cam pin as it is reducing the resulting wear and stress introduced to the bolt.
SCP / ICP is based on the TDP spec cam pin, dimpled on one side, and NP3 or nitride coated. Indeed, the NP3 SCP / ICP is incorporated into the SBCG, starting from December, 2019 production units.
Machined in 4340 and heat treated per TDP specs. Nitrided or NP3 coated.
Made in USA.
SCP / ICP is incompatible with KAC E3 bolt.
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