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70cuda383 02-06-2013 05:06 PM

How do you verify?
I picked up an M16 BCG off arms list, the guy wanted $250 for the complete BCG and a charging handle. said he bought the part to finish his build, then when he was told he couldn't get a barrel for 2+ years, he sold all the parts off.

He said that when he bought it, the guy told him it was a colt.

it looks to me like a standard mil-spec BCG with chrome lined carrier and all mil-spec parts. but there are no names or numbers stamped on it.

just wondered, when buying used parts, do you guys have any way of verifying who actually made it? are there any measurements I can take to confirm "mil-spec"?

I'm not too concerned over it, I bought this as a stop gap for now. I have a Mil-Spec BCG on order from the same people who make Spikes' but I am tired of the indefinite waiting and lack of an honest ETA. I bought this incase I never get the BCG that I have on order, and if I do get the BCG that I have on order, I'll sell this one, hopefully for the same price that I paid for it.

70cuda383 02-06-2013 05:41 PM

the original ad:

pics of it now that I have it:

eric1229 02-06-2013 08:17 PM

I have a colt m4 and the bolt has a MPC stamp and on the left side of the carry group the is a C stamp for colt. hope this helps

eric1229 02-06-2013 08:20 PM

3 Attachment(s)
Here are the pics from my Colt BCG. Hope it helps

Quentin 02-06-2013 08:32 PM

As Eric said it doesn't look like a Colt. Also the gas key staking is weak but otherwise it looks like a good M16 BCG. I'd expect it to work well for you and as you say you can replace it later if you want.

Unless there are clear markings it's pretty hard to ID a BCG. I have a Daniel Defense BCG (made before they began marking them) and there's no way to be 100% sure what it is other than I trust the vendor I got it from a few years ago.

70cuda383 02-06-2013 10:47 PM

Thanks for the pics! yea, probably not a colt. hopefully the guy I bought it from didn't pay "colt" prices for a non-colt part. I'm not upset that i paid $250 for a complete BCG and a charging handle, given the current panic pricing. I'm willing to bet that if I REALLY wanted to, I could toss it up on Gunbroker tonight and fetch $350-400 for it. when looking at it, there is hardly any wear marks in the finish, especially on the cam pin. the one in my old AR had a few thousand rounds through it and the finish on it had worn down to a bright shiny silver.

I tossed it into my AR and test fired about 10 rounds, and it works as promised. no malfunctions of any kind, so I think it'll work just fine until the brand new spikes BCG arrives. (although 10 rounds is hardly a torture test haha)

70cuda383 02-06-2013 10:49 PM


Originally Posted by Quentin (Post 1126798)
Also the gas key staking is weak but otherwise it looks like a good M16 BCG.

Can someone post up pics of what good staking looks like? I thought it was rather neat, and looks to be effective.

dickpalmer 02-07-2013 02:56 AM

1 Attachment(s)
Attachment 83927

Good steaking.

longunner 02-07-2013 04:04 AM


Originally Posted by dickpalmer

Good steaking.

What exactly does staking a BCG do? :confused:

Quentin 02-07-2013 06:03 AM

Keeps the screws tight that secure the gas key. You get short stroking if the key loosens. If it gets real bad the key and gas tube can self destruct upon impact.

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