Hey guys,
I was just reading about Ned’s staking tool and then transitioned thoughts toward the POF roller cam might make a good upgrade.
I know a couple guys on here have tried them out, such as Stickman, but I wanted to get the definitive rundown on if it works and is it worth it?
My logical brain assumes that any wear the upper receiver gets from the cam pin would just occur to the point where that upper is just broken in?
My sample of one says it works, but that isn’t with a super high round count. I’m also willing to point out that while in MIL & LE service, I’ve never seen a huge cam pin issue. That doesn’t mean things can’t be made better, and I freely admit I’ve never heard of or seen a problem with the POF cam pin.
Yep. That’s it.
I just added one to my MCX and manually cycling the bolt definitely feels smoother. My understanding is that it is more beneficial to piston operated guns that use carrier inertia to unlock the bolt. It might also reduce the friction when the bolt picks up a new cartridge from the magazine and the cam slides against the receiver. I’ve never read of this being an actual problem. On a regular AR, I probably wouldn’t spend $20 on a roller to save cosmetic wear from a $60 upper receiver.
I’ve been running them in my rifles for several years and very happy with them. Haven’t had any failures and they do seem to smooth the action ever so slightly.
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They really shine more in piston guns than DI guns, although they will still smooth out DI guns a little too. They are very high quality and durable, coated in NP3.
I’d roll it right into the trash can. Another solution in search of a problem from a questionable company IMO.
Agreed. I wouldn’t own anything remotely related to POF.
Is there something bad about POF I don’t know about? If there is please let me know because I don’t want to buy stuff from a company that’s not pro second amendment. I just heard that story about the owner of Rand CLP.
They cause extra damage if used in carbines and SBRs running cans.
Increased duration of pressure spike blows through chamber against the bolt face after unlock and causes the BCG to be pushed to the rear, tipping the cam pin into the inside of the upper.
Having the total surface area of the pin reduced from the flat fixed pin to a much smaller contact surface of the round pin creates a nice divot right behind the cam pin relief cutout. And no, i’m not talking about the typical wear leading into the relief cutout that most people complain about.
Might work better in non-suppressed platforms.
There’s a thread on TOS talking about high (6 digits) round count rental auto guns. If I remember correctly, he found that the roller cam pins broke earlier than regular ones. These M4’s see more than the average “shoot it until it breaks”, of course.
Mine has around 5k on it but none of that has been full auto.
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That’s interesting, damn.
Also, what’s the deal w/ POF? I see guys like Kyle Lamb repping them, so
See, so it’s tough for a guy like me because I really like Kyle Lamb’s stuff -own a few books and hopefully, can get some training as a plain jane civ. So I guess celebrity endorsements work. Although I havent heard why POF is sucky?
I agree with this guy simply due to his avatar,
Grumps, that’s from a POF cam pin??
If it has the the same performance as the part it’s meant to an improvement of, and doesn’t do it any better, in fact doesn’t perform as well as the factory part, it’s not an upgrade at all, but a down grade.
Maybe I missed it, did this happen on a piston or DI gun? It’s amazing that, after unlocking, the bolt face can still be hit with such force to cause the cam pin to impact the upper like that. Just goes to show how complex the operation of these simple machines really are.
