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Semper Fi
"Being able to do the basics, on demand, takes practice. " - Sinister
notice the wear on a brand new BCM BCG after about 500 rnds, just been rotating it after everytime i shoot a match. does seem to have spread the wear out. but if anybody wants a cam pin will trade for 40 lbs of H322I've been using EWL 30 weight, really like the fact that it stays in place on hot day's(90+) and does'nt gum up in the cold(-15 with wind chill)
Black River Tactical
BRT OPTIMUM HFCL Barrels - Hammer Forged Chrome Lined 11.5", 12.5", 14.5"
BRT OPTIMUM Barrels - 16" MPR, 14.5" MPC, 12.5" MRC, 11.5" CQB, 9" PDW
BRT EZTUNE Preset Gas Tubes - CAR and MID
BRT Covert Comps 7.62, 5.56, 6X, 9mm
BRT MarkBlue Gas Tubes - BRT EXT, EXC and PDW Lengths
BRT MicroPin Gas Blocks - .750" & .625"
BRT MicroTUNE Adjustable Gas Blocks
BRT CustomTUNE Gas Ports
My Daniel Defense BCG cam-pin was 0.001" or so (I forget, but there was a spec difference when I mic'ed it, extremely small difference) larger than the RCA cam-pin, and I could feel with my hands slightly more movement in the RCA setup, yet it delivered less wear, which is to say, no wear vs. catching my fingernail.
Last edited by WS6; 07-04-13 at 00:32.
Okay, I'm finding tons of good info about the cam pin along with pics using the search button.
I use an NiB cam pin in my LMT E-carrier and LMT std bolt. Some finish wear at the 3,700 round mark but no gouging yet. Nothing catches on my finger nail. I can't remember if I snagged it at Spikes (They're local to me) or if it's an LWRCi. I suspect it's Spikes.
The cam pin always fit virgin-tight in my LMT bolt. When I first got the pin, it wouldn't go in the bolt without grease using finger pressure alone. Greased and it slid in...haven't really thought about it since.
I dunno if I would go with HC since it has been more abrasive in texture in my experience.
"That thing looks about as enjoyable as a bowl of exploding dicks." - Magic_Salad0892
"The body cannot go where the mind has not already been."
I agree Patrick. I don't have many of them but I do find that cam pins that are nickel-boron'd or hard chrome typically last 3-4 times longer. I'd like to pick up one of those RCA (Rubber City Armory) BCGs to see how having a nitrided bolt, carrier, cam pin and firing pin all hold up together.
Chief Armorer for Elite Shooting Sports in Manassas VA
Chief Armorer for Corp Arms (FFL 07-08/SOT 02)
On my BCM BCG the cam pin measures .3105". The bore in the bolt measures .312 on the insertion side.
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