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1/25/2018 7:38:29 AM
Posted: 6/8/2002 1:57:36 PM EST
if so..., i am certain you have noticed the "MPC" etching on it, any one have an inkling of what it means ? all my Colt bolts have those initials........

"Metal Particle Checked".......?????????????
Link Posted: 6/8/2002 1:59:26 PM EST
I guess I always thought it was

Metal Particle(Checked)...Colt
Link Posted: 6/8/2002 2:02:42 PM EST
Mattel Plastics Corporation?
Link Posted: 6/8/2002 3:06:07 PM EST
[Last Edit: 6/8/2002 3:06:34 PM EST by TheKill]
MAGNETIC particle checked....IIRC
Link Posted: 6/8/2002 3:17:48 PM EST

Originally Posted By TheKill:
MAGNETIC particle checked....IIRC

That's how I remember it.
Link Posted: 6/9/2002 4:09:29 AM EST
well guys'n gals,

i just returned from "Biggerhammer" & all it means is it is made by Colt...!! shudda looked there first !!!!!!
Link Posted: 6/9/2002 7:08:29 AM EST

Its been checked for cracks.
Link Posted: 6/23/2002 8:00:02 AM EST
some of mine look like the MP or MPC was done by someone in his garage, while others look like they were done by a machine.

Link Posted: 6/23/2002 8:22:03 AM EST

which ones look lyke what between your older Colts vs your newer Colts, do you happen to have an SP-1 in original condition ? i have one but someone replaced the bolt & carrier during it's lyfetyme, it now has a new notched F.A. carrier, my oldest all original Colt was made in 1985 & the "P" is on the last leg of the "M" & the "C" has a slight space between it & the "P" & the entire MPC is very clear & obvious, that is why i started this note, because the other bolts have the same scheme, but are barely visible, one of my NIBs is clearly visible......

Link Posted: 6/23/2002 8:37:24 AM EST
I can only be sure of the origin of one of my bolts.

I came in my COLT AR15-A3 Tactical carbine. The markings are clear and look like they've been done mechanically.

The rest of my bolts have come from online auctions so i don't know. I was wondering if the sloppier ones were faked by someone in their garage.
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