User Panel
User Panel
User Panel
WA, USA
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Posted: 4/19/2024 3:29:11 PM EDT
Sharing this for those interested.
https://centurionarms.com/parts-accessories/centurion-arms-e4-etb-tapered-bolt-phosphate/ |
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Posted: 4/19/2024 3:45:39 PM EDT
[#1]
Looks like the Knights lug patent has expired.
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GA, USA
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Posted: 4/19/2024 4:40:00 PM EDT
[#2]
I like how they put their arrow on the bolt so you know which direction to install it.
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UT, USA
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Posted: 4/19/2024 5:00:35 PM EDT
[#3]
Quote HistoryOriginally Posted By OTDR: I like how they put their arrow on the bolt so you know which direction to install it. It’s their logo… |
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Posted: 4/19/2024 5:37:04 PM EDT
[#4]
Quote HistoryOriginally Posted By Just10mm: It’s their logo… Quote HistoryOriginally Posted By Just10mm: Originally Posted By OTDR: I like how they put their arrow on the bolt so you know which direction to install it. It’s their logo… 
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Posted: 4/19/2024 5:38:26 PM EDT
[#5]
so does this use a standard ar-15 cam pin and firing pin? or does it require the KAC Cam Pin and Firing Pin? ordered one regardless but kinda interested and couldn't get ahold of Centurion CS today.
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Posted: 4/19/2024 6:00:44 PM EDT
[#6]
Quote HistoryOriginally Posted By 5L33P3R: so does this use a standard ar-15 cam pin and firing pin? or does it require the KAC Cam Pin and Firing Pin? ordered one regardless but kinda interested and couldn't get ahold of Centurion CS today. just got word from Centurion CS: uses standard ar-15 firing pin and standard cam pin. |
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GA, USA
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Posted: 4/19/2024 6:25:25 PM EDT
[Last Edit: OTDR]
[#7]
CA makes some great products!
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GA, USA
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Posted: 4/19/2024 6:29:46 PM EDT
[Last Edit: OTDR]
[#8]
double tap
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Posted: 4/19/2024 6:37:32 PM EDT
[Last Edit: Marksman14]
[#9]
I literally have no idea whats going on in this thread. And worst case is, its not GD.
ETA: I guess the above edits negate that. |
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Posted: 4/19/2024 7:00:44 PM EDT
[#10]
Are those supposed to be rounded lugs?
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Posted: 4/19/2024 8:10:30 PM EDT
[#11]
Looks like it only works with a special “T” marked Cneturion Arms barrel extension.
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Posted: 4/19/2024 8:28:33 PM EDT
[#12]
Quote HistoryOriginally Posted By Yojimbo: Looks like it only works with a special “T” marked Cneturion Arms barrel extension. Or Knight’s E3 extension |
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Posted: 4/19/2024 8:32:25 PM EDT
[#13]
Quote HistoryOriginally Posted By Luny421: Or Knight’s E3 extension Quote HistoryOriginally Posted By Luny421: Originally Posted By Yojimbo: Looks like it only works with a special “T” marked Cneturion Arms barrel extension. Or Knight’s E3 extension "Centurion Arms E4/ETB tapered bolts may only be used in Centurion Arms' T-Marked barrel extensions or Knights Armament E3 barrel extensions" |
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Posted: 4/19/2024 8:58:35 PM EDT
[#14]
When mine gets in I’ll do a comparison… I keep an spare E3 bolt on hand but figured this was worth a look also
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Posted: 4/19/2024 9:03:21 PM EDT
[Last Edit: WUPHF]
[#15]
Those lugs don’t appear to have near as much meat on them as KAC bolt lugs, but ’ll probably pick one up as a backup for my SR15 since component E3 bolts have been non-existent for years.
$95 over $300 is just icing on the cake. |
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Posted: 4/19/2024 9:25:44 PM EDT
[#16]
Quote HistoryOriginally Posted By WUPHF: Those lugs don’t appear to have near as much meat on them as KAC bolt lugs, but ’ll probably pick one up as a backup for my SR15 since component E3 bolts have been non-existent for years. $95 over $300 is just icing on the cake. That’s why I did it… when mine shows up I’ll be sure to get some comparison photos and see how it fits with the E3 extension |
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Posted: 4/19/2024 10:09:13 PM EDT
[#17]
Quote HistoryOriginally Posted By Yojimbo: Looks like it only works with a special “T” marked Cneturion Arms barrel extension. Any idea which barrels of theirs are marked with a T on the extension? I have a couple 14.5" CHF Midweights and I do not see mine marked with a T anywhere on the extension. |
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Posted: 4/19/2024 10:14:52 PM EDT
[Last Edit: TGWLDR]
[#18]
Quote HistoryOriginally Posted By jasonm4: Any idea which barrels of theirs are marked with a T on the extension? I have a couple 14.5" CHF Midweights and I do not see mine marked with a T anywhere on the extension. Quote HistoryOriginally Posted By jasonm4: Originally Posted By Yojimbo: Looks like it only works with a special “T” marked Cneturion Arms barrel extension. Any idea which barrels of theirs are marked with a T on the extension? I have a couple 14.5" CHF Midweights and I do not see mine marked with a T anywhere on the extension. "Currently Compatible T-Marked Centurion Arms Barrels*: 2024 Batch of 14.5" Hammer Forged Carbine Socom Barrels 2024 Batch of 11.5" Hammer Forged Carbine FBI Barrels" |
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Posted: 4/19/2024 10:50:24 PM EDT
[#19]
Quote HistoryOriginally Posted By OTDR: CA makes some great products! That's an odd statement considering the source. 
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Posted: 4/19/2024 11:01:45 PM EDT
[Last Edit: Marksman14]
[#20]
Quote HistoryOriginally Posted By TGWLDR: That's an odd statement considering the source. Yeah, it was an edit after I called out his posts. There was no double tap, just two shitposts and a subsequent edit of both. |
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Posted: 4/20/2024 12:04:19 AM EDT
[#21]
Quote HistoryOriginally Posted By TGWLDR: "Currently Compatible T-Marked Centurion Arms Barrels*: 2024 Batch of 14.5" Hammer Forged Carbine Socom Barrels 2024 Batch of 11.5" Hammer Forged Carbine FBI Barrels" Quote HistoryOriginally Posted By TGWLDR: Originally Posted By jasonm4: Originally Posted By Yojimbo: Looks like it only works with a special “T” marked Cneturion Arms barrel extension. Any idea which barrels of theirs are marked with a T on the extension? I have a couple 14.5" CHF Midweights and I do not see mine marked with a T anywhere on the extension. "Currently Compatible T-Marked Centurion Arms Barrels*: 2024 Batch of 14.5" Hammer Forged Carbine Socom Barrels 2024 Batch of 11.5" Hammer Forged Carbine FBI Barrels" Reading is fundamental, I should try it! Thanks Tig. |
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Posted: 4/26/2024 2:18:31 PM EDT
[Last Edit: 5L33P3R]
[#22]
 Attached File Attached File Attached File Attached File Attached FileConfirmed that the new bolt works with a standard firing pin and standard cam pin. Will test fit with the E3 barrel I have on my work bench tonight. Looks like a good piece, but you can see that the lugs aren’t rounded as the KAC bolt but they are tapered unlike a standard bolt |
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Posted: 4/26/2024 2:18:49 PM EDT
[#23]
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Posted: 4/26/2024 2:32:26 PM EDT
[#24]
Quote HistoryOriginally Posted By jasonm4: Reading is fundamental, I should try it! Thanks Tig. Quote HistoryOriginally Posted By jasonm4: Originally Posted By TGWLDR: Originally Posted By jasonm4: Originally Posted By Yojimbo: Looks like it only works with a special “T” marked Cneturion Arms barrel extension. Any idea which barrels of theirs are marked with a T on the extension? I have a couple 14.5" CHF Midweights and I do not see mine marked with a T anywhere on the extension. "Currently Compatible T-Marked Centurion Arms Barrels*: 2024 Batch of 14.5" Hammer Forged Carbine Socom Barrels 2024 Batch of 11.5" Hammer Forged Carbine FBI Barrels" Reading is fundamental, I should try it! Thanks Tig. Shit happens to the best of us man. 
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Posted: 4/26/2024 2:32:53 PM EDT
[#25]
Thanks!
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Posted: 4/26/2024 2:33:06 PM EDT
[#26]
Originally Posted By 5L33P3R: https://www.ar15.com/media/mediaFiles/478727/IMG_0718_jpeg-3198530.JPG https://www.ar15.com/media/mediaFiles/478727/IMG_0719_jpeg-3198531.JPG https://www.ar15.com/media/mediaFiles/478727/IMG_0720_jpeg-3198532.JPG https://www.ar15.com/media/mediaFiles/478727/IMG_0721_jpeg-3198534.JPG https://www.ar15.com/media/mediaFiles/478727/IMG_0722_jpeg-3198535.JPG Confirmed that the new bolt works with a standard firing pin and standard cam pin. Will test fit with the E3 barrel I have on my work bench tonight. Looks like a good piece, but you can see that the lugs aren’t rounded as the KAC bolt but they are tapered unlike a standard bolt Originally Posted By 5L33P3R: https://www.ar15.com/media/mediaFiles/478727/IMG_0723_jpeg-3198541.JPG Looks interesting. I'll have to keep these in mind. |
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Posted: 4/26/2024 2:45:14 PM EDT
[#27]
it looks like a good bolt, took everything apart and reassembled pretty easily. i picked up a new takeoff 14.5" mod2 barrel a while back and was going to use my spare E3 bolt and one of the E3 Field repair kits to build the BCG for that barrel, but if this bolt works then i can toss the spare bolt and field repair kit back in the range bag and use standard parts for this build.
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Posted: 4/26/2024 9:46:05 PM EDT
[#28]
 Attached File Attached File Attached FileFits the E3 receiver extension really well… looks like I’ll put it all together and test fire tomorrow |
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Posted: 4/26/2024 10:07:21 PM EDT
[#29]
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Posted: 4/29/2024 9:40:54 AM EDT
[#30]
made some updates on other posts/sites... but i ran 300 rounds though the rifle with the Centurion bolt KAC barrel combo. it ran perfectly. no issues at all. if you have a spare KAC E3 barrel and cant find a bolt or field repair kit to finish it off, grab one of these. i'm not saying its just as good as the KAC bolt, but it runs great and you can use standard cam pin and standard firing pin.
-t |
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Posted: 4/29/2024 11:46:06 AM EDT
[#31]
Quote HistoryOriginally Posted By 5L33P3R: made some updates on other posts/sites... but i ran 300 rounds though the rifle with the Centurion bolt KAC barrel combo. it ran perfectly. no issues at all. if you have a spare KAC E3 barrel and cant find a bolt or field repair kit to finish it off, grab one of these. i'm not saying its just as good as the KAC bolt, but it runs great and you can use standard cam pin and standard firing pin. -t Thank you! |
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