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PA, USA
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Posted: 5/11/2024 8:45:22 PM EDT
[Last Edit: BMRCo]
I got a free SS barrel from a buddy of mine; he’s a maintenance guy for an apt. building, and often gets free stuff due to people leaving it behind after moving or being evicted. Oddly-enough, it’s a 15”. However, the rifling is good, and it’s in nice shape, but the markings on it are unknown to me. Theres a little star (kinda like BCM) and a #4 on the chamber … Any clue???
 
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Posted: 5/11/2024 9:00:15 PM EDT
[Last Edit: gunnut284]
[#1]
Geissele appears to have similar markings
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Posted: 5/11/2024 9:47:46 PM EDT
[#2]
Where is the star?
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PA, USA
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Posted: 5/11/2024 11:01:17 PM EDT
[Last Edit: BMRCo]
[#3]
Originally Posted By 1168RGR: Where is the star? Left side of the chamber |
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MN, USA
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Posted: 5/11/2024 11:04:16 PM EDT
[#4]
oddly enough, it’s a 15” Did you measure with a rod and a bolt locked in the extension? A barrel that measures 15" with a tape measure from end to end, will likely measure 14.5 in actuality. Just curious as to how you got the dimension. |
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PA, USA
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Posted: 5/11/2024 11:04:31 PM EDT
[Last Edit: BMRCo]
[#5]
Quote HistoryOriginally Posted By gunnut284: Geissele appears to have similar markings Shit; I guess that’s a score then. Who the hell just leaves a barrel behind? And why’s it a 15”? I’m guessing so you can pin/weld a muzzle device? |
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PA, USA
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Posted: 5/11/2024 11:06:09 PM EDT
[#6]
Quote HistoryOriginally Posted By s4s4u: Did you measure with a rod and a bolt locked in the extension? A barrel that measures 15" with a tape measure from end to end, will likely measure 14.5 in actuality. Just curious as to how you got the dimension. Tape measure end-to-end. So it’s a 14.5 then? Interesting. |
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Posted: 5/12/2024 12:30:42 AM EDT
[#7]
Several manufacturers use extensions marked similar.
"4" denotes M4 ramps. As for the asterisk, I couldn't tell you. |
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Posted: 5/12/2024 12:32:08 AM EDT
[#8]
Quote HistoryOriginally Posted By BMRCo: Tape measure end-to-end. So it’s a 14.5 then? Interesting. Seat a bolt into the extension, measure from bolt face to tip of muzzle, that will be your barrel length. |
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MT, USA
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Posted: 5/12/2024 12:57:42 AM EDT
[Last Edit: spyderboy03]
[#9]
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Posted: 5/12/2024 9:32:50 AM EDT
[#10]
Now you must build a rifle around it.
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MN, USA
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Posted: 5/12/2024 11:16:24 AM EDT
[#11]
Quote HistoryOriginally Posted By BMRCo: Tape measure end-to-end. So it’s a 14.5 then? Interesting. Barrel length is measured from the bolt face. The bolt seats about 1/2" deep into the extension so you need to subtract from the overall length. |
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Posted: 5/12/2024 12:55:11 PM EDT
[#12]
Quote HistoryOriginally Posted By BMRCo: Tape measure end-to-end. So it’s a 14.5 then? Interesting. That’s my bet. |
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Posted: 5/13/2024 2:23:01 PM EDT
[Last Edit: bfoosh06]
[#13]
Quote HistoryOriginally Posted By 1168RGR: Where is the star? asterisk,..... or star. Might help in a search. And those are typically marks from whomever made the barrels RE. Any other marks on the barrel itself ? |
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