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View Full Version : JP Rifles CTR-02 Thermal Dissipator


xoutxkastx
09-17-2012, 7:58 PM
Over the weekend I received a new JP Thermal Dissipator. Fairly easy to install with basic tools.

Tools needed:
Torx #10
Allen wrench

Installation
1. Make sure the rifle is safe and unloaded
2. Remove JP Hand Guard with torx #10
3. Remove the JP thermal dissipator unscrewing the 8 allen screws that holds it together
4. Clean all carbon build up
5. Install the new thermal dissipator with supplied allen screws
6. Install the JP Hand Guard with the torx #10 screws
7. Take it to the range, shoot it, and post pics :laugh:

Here is the a pic of the JP HG removed and the silver thermal dissipator exposed
http://i808.photobucket.com/albums/zz9/nismo-33/IMG_1510.jpg

Thermal dissipitator is held by 8 allen screws
http://i808.photobucket.com/albums/zz9/nismo-33/IMG_0374.jpg

Thickest part of the barrel measures
http://i808.photobucket.com/albums/zz9/nismo-33/IMG_0378.jpg

Thinest part of the barrel where the thermal dissipator rests
http://i808.photobucket.com/albums/zz9/nismo-33/IMG_0375.jpg

One half of the red thermal disspitator partially mounted. Gas tube fits in between the fins.
http://i808.photobucket.com/albums/zz9/nismo-33/IMG_0379.jpg

(cont.)

xoutxkastx
09-17-2012, 7:59 PM
(cont.)

View of the thermal dissipator behind the JP HG
http://i808.photobucket.com/albums/zz9/nismo-33/IMG_0382.jpg

She's all done
http://i808.photobucket.com/albums/zz9/nismo-33/IMG_0384.jpg

http://i808.photobucket.com/albums/zz9/nismo-33/IMG_0386.jpg

Shot through my Bushnell Elite Tactical 3.5-21 x 50mm. The G2 reticle is hard to see at lowest magnification of 3.5 due to the scope being FFP.
http://i808.photobucket.com/albums/zz9/nismo-33/IMG_0385.jpg

G38xOC
09-17-2012, 8:09 PM
is it different part ..or did u go from silver to red ?

btw , its a nice rifle , how long did you have to wait for the rifle ?

MakeYaBootyBurn
09-17-2012, 8:10 PM
really really NICE

xoutxkastx
09-17-2012, 8:14 PM
is it different part ..or did u go from silver to red ?

btw , its a nice rifle , how long did you have to wait for the rifle ?

LOL I just changed the color. :D

Funny story about buying this rifle. I went in to my local LGS to buy some small primers and saw they had a JP 15 upper. The manager told me they had a CTR-02 in the back. They brought it out and couldn't say no. So my trip to the LGS was to spend $20 or so and ended up paying a little bit more for the rifle ;)

G38xOC
09-17-2012, 8:37 PM
dude , ur so lucky that u just had to wait 10 days . im glad i went with red one as well . it stands out alot lol

ordered an upper from them and its been two months and still waiting

saki302
09-18-2012, 9:02 PM
Does it actually cool the barrel faster?

I have a JP upper I bought years ago- originally made for iron sight AR match guns. It's still the most accurate semi auto I own.

-Dave

xoutxkastx
09-20-2012, 5:04 PM
Does it actually cool the barrel faster?

I have a JP upper I bought years ago- originally made for iron sight AR match guns. It's still the most accurate semi auto I own.

-Dave

Couldn't really say if it cools it faster as I always ran the thermal dissipator on it.

JohnZ
09-20-2012, 6:30 PM
Do these dissipators work on a particular barrel profile, or is it proprietary to the JP barrel?

xoutxkastx
09-20-2012, 6:35 PM
Do these dissipators work on a particular barrel profile, or is it proprietary to the JP barrel?

The barrell will need to be turned to the interior dimension to make it fit on a non JP barrel


dude , ur so lucky that u just had to wait 10 days . im glad i went with red one as well . it stands out alot lol

ordered an upper from them and its been two months and still waiting

All I can say is the juice is worth the squeeze. :)

gil671
09-21-2012, 11:34 AM
Wow! Thats nice!

ddindetroit
12-31-2012, 2:33 PM
This is a really nice write up and your CTR looks just like mine down to the HDMR scopey!

I'll bet you are happy you have this set up. JP products have essentially dried up after the elections.

DD

tuna quesadilla
12-31-2012, 2:56 PM
So what purpose does it serve on a scoped/precision rifle other than adding pretty colors, adding unnecessary weight, and lightening your wallet?

762.DEFENSE
12-31-2012, 3:24 PM
That looks great!

ar15barrels
12-31-2012, 10:09 PM
I have turned down a few barrels for people to install these.
Any barrel over 0.650" in diameter under the handguards can have one fitted.

shooting4life
12-31-2012, 11:36 PM
I like mine with the heat sink. I have a jp15 upper on a home built lower. Upper has lmos carrier group and assorted lightened parts. It is like puppy farts with the gas block tuned, the low mass carrier/buffer and the comp. The scope is currently a viper pst 2.5-10
http://i630.photobucket.com/albums/uu30/shooting4life/jordangunstuff033.jpg

Rbutler
01-01-2013, 9:09 AM
Just out of curiosity how does it affect accuracy? I know free bloating the barrel is a plus, does this since it attches to only the barrel only cause a single poi shift when installed?

xoutxkastx
01-01-2013, 10:42 AM
This is a really nice write up and your CTR looks just like mine down to the HDMR scopey!

I'll bet you are happy you have this set up. JP products have essentially dried up after the elections.

DD

Thanks brother. I've seen the rigs you have. I wish I had that AIC rig you have for sale :D


So what purpose does it serve on a scoped/precision rifle other than adding pretty colors, adding unnecessary weight, and lightening your wallet?

Cause I can :D

xoutxkastx
01-01-2013, 10:43 AM
Just out of curiosity how does it affect accuracy? I know free bloating the barrel is a plus, does this since it attches to only the barrel only cause a single poi shift when installed?

The HG is not attached to the barrel. It is attached around the barrel nut that is secured to the upper receiver. No pressure is placed on the barrel from the HG. Hope that helps

MUKAK
01-01-2013, 11:44 AM
So what purpose does it serve on a scoped/precision rifle other than adding pretty colors, adding unnecessary weight, and lightening your wallet?

he probably "bump fires" it lol

damon1272
01-01-2013, 12:58 PM
It serves the purpose of cooling the barrel faster due. For most shooting it will not make a difference. If making a high number of shots (i.e. prairie dogs or mag dumps) it works to cool the barrel faster.

xoutxkastx
01-01-2013, 1:15 PM
he probably "bump fires" it lol

:28: +1 lol

darksands
01-01-2013, 1:38 PM
If it is not touching the barrel I don't see how it dissipates heat for the barrel. Heat would have to travel back tot the point of contact and then to the heatsink. Or does it cool off the gas faster so it help with keeping the rifle cooler over time?

xoutxkastx
01-01-2013, 1:44 PM
If it is not touching the barrel I don't see how it dissipates heat for the barrel. Heat would have to travel back tot the point of contact and then to the heatsink. Or does it cool off the gas faster so it help with keeping the rifle cooler over time?

The heat sink sits right on the barrel and helps to keep the barrel cool

darksands
01-01-2013, 1:47 PM
Ah. Ok. Thanks.

Southpaw45
01-01-2013, 2:58 PM
Very nice rifle. Looks like you got some serious coin in that thing..

Southpaw45
01-01-2013, 2:59 PM
Very nice rifle. Looks like you got some serious coin in that thing..