Lantac SmoothCam Domed Cam Pin 5.56 - Copper

Manufactured by Lantac USA
SKU: 01-UP-556-CP
MPN: 01-UP-556-CP
Manufactured by Lantac USA
7 Reviews

In Stock

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The Lantac CP-R360 Cam Pin features a unique, domed style head designed to curve away from the receiver’s internal surface and help reduce wear. The flat face on the dome head allows it to be inserted into any .223/.556 bolt carrier without having to remove the gas key. This cam pin is machined from durable stainless steel and hardened to H900 for extra strength with a natural copper/brass finish. 

  • Domed head cam pin
  • Copper/brass finish
  • Stainless steel
  • Compatible with .223/.556 BCGs
  • Made in the U.S.A.

Lantac USA manufactures the highest quality accessories for AR-15/M16 pattern rifles. Precision made in the U.S.A., rifles, muzzle brakes and more.
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BrandLantac USA
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

7 reviews

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Nice concept. Smoothes the action...

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Nice concept. Smoothes the action of the bolt in .300 BLK and 5.56 units. Attached to Rubber City standard 5.56 BCGs on both. Why not a Nickel Teflon though? Also. Added the POF bearing cam pin to another unit which is even better but that's for another review. Definitely recommend this over the standard cam pin.
As well as a big nod to our favorite supplier, Primary Arms for keeping us all stocked as best you can in these times. Thanks.

Nice and less $ than POF rolling cam pin

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LANTAC products are top quality and the pin fit easily into existing BCG. Functions flawlessly for a fair price. Recommended!

Works great

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I’ve been installing these in all my AR-15’s and the company’s AR-10 version. It makes opening and closing the bolt carrier much easier. The gun functions much easier and smoother. You don’t need as much energy to get the bolt open and close. Of all the upgrading I’ve done on my AR’s this one part is one of the most significant in making the guns run much easier and smoother.

Why isn't this standard?

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This product is a literal "must have" upgrade for any bolt carrier group. Of all the AR upgrades I have ever installed, this cam pin is one of the few where I've noticed a real difference in how the action runs. Whether charging the action or firing the gun, the reduction in wear and ease of operation is super obvious and really makes the firearm feel buttery. My Colt AR had noticeable wear in the cam pin cutout of the upper receiver from the original cam pin and you could feel slight friction and hang-up when charging the action. Once I installed the Lantac pin, it literally removed the aforementioned complaints. I'm telling you, if there's any upgrade you NEED to get, it is this one.

Excellent machining

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So far so good been nasty weather the pin fits excellent seems to be very smooth. Hopefully the weather will break soon to test it out more in the 300 Ham’r


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exactly what i was looking for thx.

Excellent enhancement

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I think in most circumstances, any form of enhanced cam pin doesn't really add any value or usefulness. Very few users will ever notice where from a camp in, especially when it comes to standard AR-15 configurations. That said, this part definitely has a place in certain platforms, such as piston guns or other weapons that have a somewhat more violent bolt reciprocation. In my case, I got a couple of these for very old LR300 rifles that have unique upper receivers that are irreplaceable. These cam pins have reduced wear to the upper receiver, and resulted in smoother operation.