User Panel
User Panel
User Panel
TX, USA
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Posted: 4/28/2021 2:48:48 PM EDT
What are your thoughts on these? Anybody use one?
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Posted: 4/28/2021 3:26:15 PM EDT
[#1]
Originally Posted By Demphna2: What are your thoughts on these? Anybody use one? 
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TX, USA
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Posted: 4/28/2021 6:03:27 PM EDT
[#2]
Quote HistoryOriginally Posted By QCMGR: I need reasons |
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Posted: 4/28/2021 6:45:46 PM EDT
[#3]
Aluminum, why not polymer?
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Posted: 4/28/2021 6:46:46 PM EDT
[#4]
Nah, I'm sweet.
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Posted: 4/28/2021 6:48:55 PM EDT
[#5]
It peens a hardened cam. Couldn’t imagine what aluminum would do.
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TX, USA
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Posted: 4/28/2021 8:04:40 PM EDT
[#6]
Quote HistoryOriginally Posted By mecompco: Aluminum, why not polymer? Does JP know something I don't know? |
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Posted: 4/28/2021 8:12:47 PM EDT
[#7]
Quote HistoryOriginally Posted By Demphna2: https://jprifles.com/buy.php?item=JPBC-8%20BCG Does JP know something I don't know? I guess they must, but I'll stick with steel for .308! |
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Posted: 4/29/2021 10:11:19 AM EDT
[Last Edit: bfoosh06]
[#8]
personally... I would consider a aluminum BCG to be an expendable item.
Quote... from JP's page. "Compatibility and Usage Non-ferrous specialty carriers should be considered consumable rather than lifetime parts. The JPBC-1 yields a performance advantage for competition applications at a price. Your usage and maintenance will determine the duty life of your carrier. The JPBC-1 is a competition/race gun part only and is not recommended for any duty/defense use where absolute reliability is required. This carrier should also be run with an adjustable gas system to minimize stress on the entire bolt carrier assembly. This carrier is not recommended for use with gas systems shorter than mid-length for longest service life. Use with carbine or shorter gas systems may result in gas erosion in the tail stock area and subsequent leakage and reduced service life. To help avoid the instance of slamfires, this bolt carrier comes packaged with a titanium firing pin. We strong encourage use of a titanium firing pin with this carrier to ensure safety. Not for use in .308 AR-type rifles. " 
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TX, USA
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Posted: 4/29/2021 10:15:34 AM EDT
[Last Edit: Demphna2]
[#9]
Quote HistoryOriginally Posted By bfoosh06: https://www.ar15.com/media/mediaFiles/171545/165595-your-scientists-were-so-preocc-k8-1923258.jpg  This is the JPBC-8. -1 I think it's for a small frame. I got one coming, I'll have a report sooner or later about how it goes. |
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Posted: 4/29/2021 10:47:56 PM EDT
[#10]
Quote HistoryOriginally Posted By Demphna2: This is the JPBC-8. -1 I think it's for a small frame. I got one coming, I'll have a report sooner or later about how it goes. And I forgot to add... certainly no offense intended. I just don't think an aluminum bolt carrier is my cup of tea. I will be interested in your results. Maybe my concerns are unfounded. Thanks ahead of time ! |
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Posted: 4/29/2021 11:29:47 PM EDT
[#11]
Originally Posted By Demphna2: What are your thoughts on these? Anybody use one? I still have the 1st gen JP, put away as a collector's item after a few thousands rds...still working fine but I could see the hard anodizing wearing off. I was running the Whiskey Arms for 2 seasons and started to have issues with it when gun got hot on a long stage (3-gunning), too much gas bypassed the bolt gas rings due to different rate of expansion. Friend of mine is still running his 2nd gen. JP, it is a bit more durable now since metallurgy and coating are much improved 15 years later. Reason for me to ditch the alum carrier - I can get similar result (fast cycling and imperceptible forward motion) but much more reliable with a titanium carrier. |
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TX, USA
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Posted: 4/30/2021 5:46:50 AM EDT
[#12]
Quote HistoryOriginally Posted By bravo5two: I still have the 1st gen JP, put away as a collector's item after a few thousands rds...still working fine but I could see the hard anodizing wearing off. I was running the Whiskey Arms for 2 seasons and started to have issues with it when gun got hot on a long stage (3-gunning), too much gas bypassed the bolt gas rings due to different rate of expansion. Friend of mine is still running his 2nd gen. JP, it is a bit more durable now since metallurgy and coating are much improved 15 years later. Reason for me to ditch the alum carrier - I can get similar result (fast cycling and imperceptible forward motion) but much more reliable with a titanium carrier. I appreciate your response, I was beginning to wonder if I would get anybody who has used one. |
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Posted: 4/30/2021 6:25:45 AM EDT
[#13]
They're great if you want an extremely fast cycle rate in your M16. Good way to hit 1500+RPM.
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TX, USA
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Posted: 5/3/2021 10:46:16 PM EDT
[Last Edit: Demphna2]
[#14]
 Aluminum  Titanium 
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Posted: 5/11/2021 11:01:49 AM EDT
[#15]
Thanks for the weights .
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USA
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Posted: 5/11/2021 11:16:15 AM EDT
[#16]
I wouldn’t run an aluminum BCG for many of the same reasons I wouldn’t drive a wooden car.
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