Results 1 to 23 of 23

Thread: JP Enterprises' JPSCS Silent Captured Spring

  1. #1
    My name is Jim
    Follows
    0
    Following
    0

    Join Date
    Jul 2010
    Location
    Birmingham, AL
    Posts
    1,056

    JP Enterprises' JPSCS Silent Captured Spring

    This is a review of the JPSCS Silent Captured Spring by JP Enterprises
    http://jprifles.com/1.4.7.2_os.php



    Rifle: JP Enterprises LRP-07 chambered in 260

    Installation:
    Complete and easy to follow instructions are included with the Silent Captured Spring. I started by removing the original spring and buffer. Next I inserted the provided spacer (not shown) and then the Silent Captured Spring. The spacer is not needed for carbine length systems. It is recommended that the buffer retainer and plunger be removed but I left it in and have not experienced any problems to date.

    Initial Operation:
    When manually cycling the bolt with the side charging handle the first noticeable difference is the absence of what JPE calls the "spoon over cheese grater" sound. Although JPE manufactures their own springs the noise was still present albeit less than other large platform ARs. While this is a worthwhile upgrade in and of itself I consider it to be secondary to the functional benefit I will get to a little later. Also, when cycling the bolt it moves with far less resistance as though it is "gliding".

    Range Test:
    Initial load development was done with the stock JPE LPR-07 260 which shot .5 five shot groups. With the Silent Captured Spring installed I experienced no POI change and no elevated signs in pressure. Basically there was no change with the Silent Captured Spring installed.

    I worked my way from 100 to 700yds prone with my original dope. I then moved to different barricades including shooting sticks and a tripod. I then had a fellow shooter perform the same test. In total 300 rounds were fired with the new Silent Captured Spring installed.

    Take Away:
    Our take away was that while the silent part of the Silent Captured Spring was a worthwhile benefit the greatest advantage was gained with quickening the recoil impulses. As many know there are several recoil impulses experienced when shooting a gas gun that one does not have with a bolt gun. The Silent Capture Spring seemed to bring these together. I would not say it is like shooting a bolt gun but it made it one quick impulse. The advantage gained in the alternate and uncomfortable positions would make it an upgrade for the completive shooter and hunter alike.

    I will be at K&M this weekend for a match if anyone would like to give it a try. Maybe Shannon or Bryan will let us put a few down range after the match. http://kmprecisionrifletraining.com/

    -Jim

  2. #2
    Private
    Follows
    0
    Following
    0

    Join Date
    Sep 2012
    Location
    Arizona
    Posts
    24

    Re: JP Enterprises' JPSCS Silent Captured Spring


    Nice review! I've been thinking about trying one of these.
    "If you would know a man, watch how he treats his dog."

  3. #3
    PTS
    Follows
    1
    Following
    0
    KNIGHT11B4's Avatar
    Join Date
    Oct 2008
    Location
    Aiken, SC
    Posts
    2,317

    Re: JP Enterprises' JPSCS Silent Captured Spring

    These springs rock. I also have one in my LRP07 and it is crazy how much it helps.
    If I must choose between peace and righteousness, I will choose righteousness every time.

    -US Optics
    -JP Enterprises
    -Manners Composite Stocks
    -Armageddon Gear

    Precision Tactical Solutions
    www.PrecisionTacticalSolutions.com

  4. #4
    Super Moderator
    Follows
    1
    Following
    0
    Rob01's Avatar
    Join Date
    Jul 2001
    Location
    CT--> NC in 3 years
    Posts
    8,380

    Re: JP Enterprises' JPSCS Silent Captured Spring

    Did it speed up close target double taps at all by making them more controllable with the quicker impulse?

  5. #5
    My name is Jim
    Follows
    0
    Following
    0

    Join Date
    Jul 2010
    Location
    Birmingham, AL
    Posts
    1,056

    Re: JP Enterprises' JPSCS Silent Captured Spring

    Originally Posted By: Rob01
    Did it speed up close target double taps at all by making them more controllable?


    Havent tried it any closer than 100 yds

  6. #6
    Super Moderator
    Follows
    1
    Following
    0
    Rob01's Avatar
    Join Date
    Jul 2001
    Location
    CT--> NC in 3 years
    Posts
    8,380

    Re: JP Enterprises' JPSCS Silent Captured Spring

    Well when you do report back.

  7. #7
    My name is Jim
    Follows
    0
    Following
    0

    Join Date
    Jul 2010
    Location
    Birmingham, AL
    Posts
    1,056

    Re: JP Enterprises' JPSCS Silent Captured Spring



    Thought I would share. 5 Shot group with above JP LRP-07 in 260 .28"

  8. #8
    DT1
    DT1 is offline
    Sergeant
    Follows
    2
    Following
    0

    Join Date
    Oct 2006
    Location
    Alabammer
    Posts
    802

    Re: JP Enterprises' JPSCS Silent Captured Spring

    Originally Posted By: KNIGHT11B4
    These springs rock. I also have one in my LRP07 and it is crazy how much it helps.


    +1

    Jim does a good job of describing how the captured recoil spring helps smooth out the recoil impulse.

    Rob, as far as reducing splits on double taps, the unit would definitely be a good tool to help with felt recoil, thus speeding up sight recovery and helping with splits.

    The captured recoil spring could be used in conjunction with other things like muzzle brakes, adjustable gas blocks, reduced mass bolts etc to make any AR platform gas gun shoot more smoothly.

    I almost think calling it a "captured silent spring" makes some people dismiss it because they think it only removes the racket made by a standard recoil spring and buffer. It definitely provides more benefits than noise reduction.

  9. #9
    Sergeant
    Follows
    0
    Following
    0

    Join Date
    Jul 2011
    Location
    Tampa, FL
    Posts
    601

    Re: JP Enterprises' JPSCS Silent Captured Spring

    Y'know, reading this thread causes today's shooting to make a bit more sense. The first few times Jim was shooting next to me, I kept getting the subliminal impression that he was shooting a bolt gun when he pulled the trigger. That didn't really register with me until now, but it makes sense...the recoil impulse and sound were definitely different. Or maybe that was just because my hearing was eroded away by Jim's brake. [img]<>/wink.gif[/img]

  10. #10
    My name is Jim
    Follows
    0
    Following
    0

    Join Date
    Jul 2010
    Location
    Birmingham, AL
    Posts
    1,056

    Re: JP Enterprises' JPSCS Silent Captured Spring

    .

  11. #11
    Gunny Sergeant
    Follows
    0
    Following
    0

    Join Date
    Feb 2009
    Location
    KCMO
    Posts
    1,406

    Re: JP Enterprises' JPSCS Silent Captured Spring

    Great review. I bought their AR-10 version for an MWS but haven't had a chance to get it to the range. I'm definitely looking forward to it now.
    Those who are merciful to the cruel, are cruel to the merciful. - Talmud

  12. #12
    My name is Jim
    Follows
    0
    Following
    0

    Join Date
    Jul 2010
    Location
    Birmingham, AL
    Posts
    1,056

    Re: JP Enterprises' JPSCS Silent Captured Spring

    .

  13. #13
    My name is Jim
    Follows
    0
    Following
    0

    Join Date
    Jul 2010
    Location
    Birmingham, AL
    Posts
    1,056
    Looks like a lot of talk recently about JP rifles so I thought I would bump this back up in case someone is thinking about adding this to a build

  14. #14
    Sergeant
    Follows
    0
    Following
    0
    Fixr's Avatar
    Join Date
    Nov 2011
    Location
    Northern Virginia
    Posts
    107
    I'm glad you did. I was thinking about buying one earlier this week and know I'm sold on it. Thanks for the review.

  15. #15
    Sergeant
    Follows
    0
    Following
    0

    Join Date
    Nov 2010
    Location
    Detroit, Michigan
    Posts
    347
    I have 2 for my AR15'S and 1 for my AR10....they are awesome..... JP has different springs available too.... They are NOT on their web page, only in their catolog, so if you want a stronger or weaker spring they are available. These are awesome.

  16. #16
    Sergeant
    Follows
    0
    Following
    0

    Join Date
    May 2010
    Posts
    932
    Tried one on a COLT 901 but it would not allow the bolt to lock after the last round, so I stuck with the stock setup. Really wish it had worked out because it flt smoother.

  17. #17
    Private
    Follows
    0
    Following
    0

    Join Date
    Mar 2013
    Posts
    43
    Any insight on how it compares to the heavybuffers.com CAR-10 buffer and spring?

  18. #18
    Sergeant
    Follows
    0
    Following
    0

    Join Date
    Aug 2005
    Location
    Rhode Island. USA
    Posts
    416
    Glad i read this--will be ordering one for my -07

  19. #19
    Sergeant
    Follows
    0
    Following
    0

    Join Date
    Nov 2010
    Location
    Detroit, Michigan
    Posts
    347
    Quote Originally Posted by thefitter View Post
    Tried one on a COLT 901 but it would not allow the bolt to lock after the last round, so I stuck with the stock setup. Really wish it had worked out because it flt smoother.
    Maybe you should have tried a lighter spring.... JP has two lighter springs than the one that comes standard. Two lighter for the ar15 version and one lighter for the Ar10 version if memory serves me correctly. Both have one heavier spring than the standard available.
    Last edited by Regalkismet; 06-13-2013 at 05:39 PM.

  20. #20
    Sergeant
    Follows
    0
    Following
    0

    Join Date
    Nov 2010
    Location
    Detroit, Michigan
    Posts
    347
    Quote Originally Posted by duhblow7 View Post
    Any insight on how it compares to the heavybuffers.com CAR-10 buffer and spring?
    I use to use slashes heavy buffers... Great product.... Probably the best traditional buffers you can buy but obviously they won't change the recoil impulse and reduce the traditional spring noise. These are totally different as described above....

  21. #21
    Sergeant
    Follows
    0
    Following
    0

    Join Date
    May 2010
    Posts
    932
    Quote Originally Posted by Regalkismet View Post
    Maybe you should have tried a lighter spring.... JP has two lighter springs than the one that comes standard. Two lighter for the ar15 version and one lighter for the Ar10 version if memory serves me correctly. Both have one heavier spring than the standard available.
    Talked with them about it, they never mentioned that. I would have tried it had they told me.

  22. #22
    Private
    Follows
    0
    Following
    0
    HotRod68Camaro's Avatar
    Join Date
    Feb 2010
    Posts
    12
    I'm wondering the same thing. Converting a SASS to a collapsible stock and am looking at the heavybuffers or the JP spring.

  23. #23
    My name is Jim
    Follows
    0
    Following
    0

    Join Date
    Jul 2010
    Location
    Birmingham, AL
    Posts
    1,056
    these are all good questions. I would contact CS. Ben normally answers the phone and is extremely knowledgeable. Here is there number 651-426-9196