View Full Version : JP tuned spring in A5 buffersystem
Any reason not to run a JP tuned rifle length spring in an A5 BCM mid length system? I haven't test fired it yet but it does feel very stiff, other than cycling issues there shouldn't be any danger of catastrophic damage?
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polydeuces
04-16-17, 08:54
Only one way to find out how well it runs.
Cant see how it would hurt.
lazythekid
04-16-17, 09:10
I've been running one in my A5 (w/ A5H3) BCM 14.5" mid length with no issues suppressed or not suppressed.
I don't know the loadings of this spring to make a comparison, but it's really unlikely that a spring engineered for the A5 would cause some catastrophic event for the OP. It may not time some events as favorable as other options, but I really doubt anything catastrophic would occur instantly. It would be more of comparison between MRBF's and MRBS's as a trend when used as intended.
It's a stainless steel spring that has been polished. I think the "tuned" verbiage is just marketing, but I digress. In my A5, I think it worked wonderfully (compared to three other springs), but I prefer chrome silicon. For twenty bucks, Sprinco is the way to go.
Thanks for the replies. I just ordered the JP because I could get it and A5 buffers at the same time. If it doesn't work or doesn't run the way I like I'll try a Sprinco.
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JP spring functions perfect with M855, overgassed so cheap steel should work great. Already running A5 with A5H2 buffer and I think the only real solution is an adjustable gas block. BTW running a Faxon gunner barrel @ 6lb 4oz! On the way home I picked up a Surefire brake
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FaxonNathan
04-20-17, 20:26
JP spring functions perfect with M855, overgassed so cheap steel should work great. Already running A5 with A5H2 buffer and I think the only real solution is an adjustable gas block. BTW running a Faxon gunner barrel @ 6lb 4oz! On the way home I picked up a Surefire brake
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Nice. Please send photos!
It's a stainless steel spring that has been polished. I think the "tuned" verbiage is just marketing, but I digress. In my A5, I think it worked wonderfully (compared to three other springs), but I prefer chrome silicon. For twenty bucks, Sprinco is the way to go.
Pardon the thread necromancy but this comes up early in a search for the JP spring so I think it should be corrected. WS6 found that the JP Tuned & Polished spring rusted very quickly; it is not stainless.
I have continued my corrosion testing to include JP's tuned and polished spring. However, it failed (all 3 that I ordered...) before they got to my house...
I am disappointed in the JP "polished and tuned" springs I ordered. I am a corrosion-phobe, and test things beyond realism when it comes to that aspect of performance. Why? It's humid where I live. I've had firearms damaged by rust before even in less humid areas. The 3 springs I ordered arrived pre-corroded in their wrappers. Now, it wasn't BAD, but you have to understand how springs work. The surface of a spring is VERY important to the properties of it. Moreso than the core or intermediate material, regarding its "ability to spring". What's more, half of the description of these things is "polished". They aren't too "polishy and slick" when they are rusted on the surface. Rust by nature tends to be a bit rough. So what did I do? I popped one of the corroded springs into my dish-washer. Why? It simulates what I might take the rifle through regarding humidity and rain at an all-day training course, or hunting. The wash cycle is not even close to done yet, and the spring is looking...rough. As in, like a Cheeto, after about 15 minutes. Might be good in a competition gun, but for a duty rifle that may ride in a hot, humid police vehicle, or be taken out on a call in the rain, or trained with, or hunted with...I'd make a difference choice. It not only failed my rather "tough" testing, it arrived rusted in what appeared to be an almost air-tight package.
Rust can clearly be seen evidenced both on the blue paper inside the wrapper, and to the right of the rust spots on the wrapper, seen on the surface of the spring.
https://scontent-ord1-1.xx.fbcdn.net/t31.0-8/13254737_815213974101_1246588540199483284_o.jpg
I have not contacted JP, because this is not a customer service or product failure issue, it is a design concept flaw of using un-coated music-wire in the wrong environmental application. While one can argue "your gun won't go in the dish-washer!", I can argue "A polished spring should not arrive corroded, and the fact that it did indicates that the process will likely continue at any out-door match, if it can take hold in a warehouse within the safety of its factory packaging."
Pardon the thread necromancy but this comes up early in a search for the JP spring so I think it should be corrected. WS6 found that the JP Tuned & Polished spring rusted very quickly; it is not stainless.
The 'Stainless' designation does not and never has meant 'rust proof'.
I dare you to grab one of your nice SS match barrels and do the same stupid dishwasher test the guy you guoted described doing with his JP springs. Let us know how it all works out with that Stainless barrel...
Under any sort of half ass normal circumstances these JP springs are not going to rust anything like you describe. You would know this if you had any experience at all actually using them in a firearm.
I did not say a stainless action spring is necessary. There are different levels of corrosion resistance within "stainless" steel but the JP spring does not appear to be any form of it, and is not claimed to be. However I see rust on all sorts of things in coastal towns that I don't inland and it is entirely reasonable for some users to want additional corrosion resistance like the Colt spring provides.
Absolutely NO rust was observed on the Ken Elmore extractor spring, or the Colt action spring, even when white paper-towels were roughly swabbed over their surfaces.
There are different levels of corrosion resistance...
My experience actually having and using them both in firearms and keeping as spares does not jive with what you seem to have been led to believe.
I could understand a pile of bad reviews steering someone away from even trying a product but you are basing your conclusions on ONE. With no pictures or evidence provided to support any of the claims.
And then you spread that stuff you think you learned like it is fact...
You appear to be accusing WS6 of lying or deception. Do you have any evidence of that here or anywhere?
Curlew also confirmed the JP spring is reactive while a Spikes 17-7 spring is not. It is not a stainless spring. What is your grievance about this?
I have a JP Tuned & Polished spring on order. I doubt corrosion will be any issue at all where I live and how I intend to use it.
I have a JP Tuned & Polished spring on order. I doubt corrosion will be any issue at all where I live and how I intend to use it.
No dishwasher test???
I'm guessing a degreased BCG will fail any dishwasher or saltwater test. If BCGs don't rust with proper maintenance, I would think most people's spring would be fine. Are there factors I'm failing to account for?
I am not here to defend the dishwasher test. I just wanted to correct the statement that the JP spring is stainless. Is there something wrong with that?
I am not here to defend the dishwasher test. I just wanted to correct the statement that the JP spring is stainless. Is there something wrong with that?
Not in the least bit, and I appreciate you sharing the information. My post was a separate musing since several threads as of late have addressed action springs rusting.
Alright. I wipe down the action spring with a generous coating of CLP so I don't see why it would corrode before the BCG. In a marine environment a complete hard chrome or nitride BCG seems prudent.
I am not here to defend the dishwasher test. I just wanted to correct the statement that the JP spring is stainless. Is there something wrong with that?
Without confirmation from JP you have not corrected anything.
If you do happen to contact them - Please let them know about your dishwasher test. Very curious how they respond to that one. LOL! :)
DG23, are you just trolling me now?
Without confirmation from JP you have not corrected anything.Again, when I asked them in January 2020, their response was that their springs were made from rocket wire, not stainless.
Have they told you otherwise? Or do you have some other reason to think the springs are stainless?
You’ve provided nothing to support your assumption. At this point I’m thinking you’re just trolling.
Alright. I wipe down the action spring with a generous coating of CLP so I don't see why it would corrode before the BCG. In a marine environment a complete hard chrome or nitride BCG seems prudent.
I’m not sure why they do, but CS Sprinco action springs rust before almost anything else will in my weapons. Colt ones or Tubbs stainless ones never do. The old Tubbs CS springs also rusted quickly for me.
Again, when I asked them in January 2020, their response was that their springs were made from rocket wire, not stainless.
Post the email you got from them then.
Bet you don't...
I’m not sure why they do, but CS Sprinco action springs rust before almost anything else will in my weapons. Colt ones or Tubbs stainless ones never do. The old Tubbs CS springs also rusted quickly for me.
If anyone here is riding them hard and putting them away wet - That would be you sir.
Well done in my opinion. :)
There are guys that read about shooting on the internet and then there are guys like you that - Actually shoot guns.
I’m not sure why they do, but CS Sprinco action springs rust before almost anything else will in my weapons. Colt ones or Tubbs stainless ones never do. The old Tubbs CS springs also rusted quickly for me.
Even with CLP I presume? Do you avoid CS springs now?
Even with CLP I presume? Do you avoid CS springs now?
I tried Sprinco and rusted them in short order but the ARs they were in live in non-climate controlled places on the coast.
The outside of the spring rubbing on the tube is not going to have any oil on it. I think the inside of the tube is a corrosive environment due to condensation and fouling residue.
If you want reliable and no rust, use what militaries around the world are using with great success: Colt carbine springs and H or H2 buffers.
Even with CLP I presume? Do you avoid CS springs now?
Correct on both counts.
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