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Posted: 1/31/2011 12:06:17 PM EDT
| Do the BCGs from BCM have the black orings already inserted on the bolts? |
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According to their website:
Features * Milspec Carpenter No. 158® Steel * HPT Bolt (High Pressure Test/ Proof) * MPI Bolt (Magnetic Particle Inspected) * Shot Peened Bolt * Tool Steel Extractor * BCM® Extractor Spring * Black Extractor Insert * Mil-Spec O-Ring Bravo Bolt |
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have a friend who just bought one....is new to the AR scene told me that the black oring came seperate in package(didnt know what it was) have not gone over to take it apart but I thought they came already inserted....is this just an extra they supply?
EDIT: Got ya......I guess they throw it in seperate....I thought for sure they came already with it inserted |
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Quoted:
The ones I've had came with the O-ring seperate. This.. I bought a BCM BCG and it came completely assembled in a bag and at the end of the bag had a separate compartment with the Black O-Ring I disassembled the bolt and it did NOT have an o-ring installed on the extractor spring I wonder if BCM wants you to use it as it comes and only install the o-ring if you begin to have extraction issues...? 
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It comes separate with the BCM bolt. It's included in case you want to run it. Paul has said that the spring in the extractor is strong enough that it doesn't need the o-ring but the o-ring may come in handy if you have a worn spring. I install it just because I like to have the piece of mind but it really isn't needed with BCM bolts.  |
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Quoted:
It comes separate with the BCM bolt. It's included in case you want to run it. Paul has said that the spring in the extractor is strong enough that it doesn't need the o-ring but the o-ring may come in handy if you have a worn spring. I install it just because I like to have the piece of mind but it really isn't needed with BCM bolts. I trusted Paul and didn't install any of mine. You can tell that the spring has enough tension when you try to reinsert the extractor pin, it is damn stiff. I just label the package and throw it in with my extra AR parts or stuff in in my pistol grip just incase I need it down the road. |
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I just got my BCM bolt and was going to post this exact question. Mine came with the o ring separate and if you look under the BCM Extractor Spring Upgrade Kit on their site it says The BCM Extractor Spring is so strong the Mil-Spec Crane O-Ring will probably not be needed, but it is included. I just installed mine and I needed needle nose pliers to compress it enough to put the pin back in.
Im just puting some fresh slip2000 on it and it is going in a S&W M&P15 MOE which is now running a Spikes buffer and the BCM BCG. Gonna hang on to the S&W one for spare parts |
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