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03-25-2016, 11:22 PM
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Join Date: Mar 2012
Location: California
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Any idea if this is a problem?
So a random individual completely unknown to me purchased a S&W m&p 15 FTF while on vacation for an unbeatable price from the owner of an auto shop working on his car. Upon inspection he found that the hammer would only lock in the back position upon releasing the trigger this was confirmed when he test fired it out in the desert. The receiver only had 2 pins and 2 positions on the safety, rock and roll, and safe. This individual immediately installed a standard trigger group and wants nothing to do with the one that came with the weapon. The weapon had amounts of carbon that necessitated 3 days in an automotive parts cleaner to soften up. Also the entire gas tube was blue as if it had been hit by a torch. It is my opinion that this random individual who is completely unknown to myself possesses a weapon that was utilized for sustained periods of fully automatic fire. The internals have been sterilized and the bolt looks like this. Is this a part that nessecitates replacement for safety reasons?
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03-26-2016, 06:45 AM
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One of my bolts came from the factory with wrinkles on the section you are pointing at. I've shot over 1k rounds through it without incident.
You bolt looks like it may still have carbon on it. Try using a brass toothbrush to remove it. If it isn't carbon, don't worry about it.
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03-26-2016, 09:04 AM
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I understand where you are going with this but you lost me on the hammer thing.
1. Pull the trigger and hammer falls forward. Correct?
2. The rifle shoots, ejects and chambers a new round. Correct?
3. Now...with the trigger still back from the original pull.....does the rifle repeat step 2?
If step 2 is not repeated then he's good.
What's written on the safety doesn't mean anything. People come up with custom markings. I've seen ones that say "PEW" then "PEW PEW PEW" and "NO PEW"
If it looks like it had heavy use the previous owner may have ran it with the slide fire or other similar gizmo.
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03-26-2016, 10:07 PM
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Quote:
Originally Posted by Doc Hollywood
The weapon had amounts of carbon that necessitated 3 days in an automotive parts cleaner to soften up.
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Do yourself a favor.
This tool will scrape off carbon and makes cleaning the bolt and bolt carrier easier and quicker. If you suffer from bouts of OCD and want every speck of carbon removed from the bolt tail, fill a mason jar with Seafoam. Drop in the bolt. Screw on the mason jar lid. Let it sit.
__________________
-John
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03-26-2016, 10:14 PM
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Yeah, if the new trigger group is working fine now, (one shot per trigger pull) he should be okay. He needs to demil, destroy, and/or trash the old trigger that was malfunctioning. He can probably pick up a new bolt from PSA for not too much cash if it needs replacing.
Whoa, wait. Is a bullet button required in California?
Last edited by Bozz10mm; 03-26-2016 at 10:20 PM.
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03-26-2016, 10:20 PM
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Never thought of Seafoam...
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04-01-2016, 04:12 PM
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If it doesn't have an auto sear don't worry about it. You can also check the serial number with the manufacturer if you are concerned.
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