New JP CTR-02 (AR15 match) Pictures!

[Zak Smith]

I just got a new AR-15 from JP Enterprises primarily for 3Gun and "field course" shooting. It's their CTR-02 model which has a custom upper and lower machined from 7075 billet. 20" medium-contour barrel, 1-in-8" twist, low-mass bolt carrier, 3lb match trigger, all the goodies.

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Looks good and shoots better. Break-in yielded multiple "one hole" groups at 100 yards with Black Hills 75gr HPBT. The big Leupold scope is just on there for testing; for 3Gun it'll wear a TA11 ACOG.

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[Bartholomew Roberts]

Nice rig... were you tempted to go with the CTR-02 compatible ACOG that JP offers?

 

[Zak Smith]

It is. The feature to which you refer is the IAI - the Integral ACOG Interface. It is a slot cut in the rails on the flat-top, with a series of, I think, 6 screw holes countersunk from underneath. In the third picture, you can just make out the longitudinal slot in the flat-top behind the ACOG mount.

The IAI is really set up work to best with the TA01. The slot does not extend to the forward end of the flat-top in order for conventional cross-slot mounts to have enough structural support. Thus the TA11 would be mounted about 1" - 1.5" further to the rear than I really prefer.

-z

 

[MicroBalrog]

Micro Wants!

 

[uglygun]

what's the twist rate on the barrel?


My accurized rifle is centered around a JP Enterprises 24 inch Grade 1 upper with a 1:9 twist, the older style uppers(mine is about 5 years old).


Mine goes APE for the 40grn Sierra BlitzKings with H322 and the AA2015BR, 10 shot groups at 100 yards delving down into 3/4 inch range after averaging multiple groups. 40grn Vmaxes do well as well.


Question, were you able to get the brake in a thread pattern allowing you to remove it or is it on there permanently. It is a PAIN to try to clean the muzzle crown on the guns with a brake. I've got the tank brake on my JP gun and it's a real pain to try to clean, shortly after I bought my upper I believe JP started offering a new thread pitch that should be postban compliant(for which no flash suppressor exists). Unless the ATF once again reversed their opinion on these sorts of things.

It's just so disheartening to have a high dollar upper and not be able to effectively clean the muzzle crown due to the brake interferring with your attempts. On my blaster rifles the crown isn't quite as important but on a firearm with a high dollar barrel, I like to know it's in good condition.

Eventually, to clean my crown I wound up going through A LOT of headache to remove that tank brake. You'd be surprised how much filth and crap was stuck inside of the brake from a few years of shooting, truely sickening.

 

[Bartholomew Roberts]

Good info; but I was referring to the TA-01 ACOG with special CTR-02 reticle that JP sells. I'm guessing you wanted to keep the eye relief and BAC on the TA11?

 

[Correia]

I shot one once at a JP demo. Holy moly it was an accurate son of a gun. The one I used had a Leopold on top and a little red dot on the handguard. I didn't really care for tilting the gun for the red dot, but the gun itself was very sweet. Their muzzle brake is very effective as well. Good buy, and I'm not even an AR fan.

 

[BerettaNut92]

Infinite Tacticality!!!

 

[Zak Smith]

uglygun,

The twist is 1:8", specifically for the 75gr and 77gr bullets seated to magazine length.

With regard to the comp, it was installed using a post-ban compliant thread pattern, then "permanent" locktite applied, and then torqued the final few degrees. The guys at JP said it won't be easy to remove without heat and special tools.

I figure if the muzzle ever gets too gunked up, I'll just soak it or spray it down with Powderblast.

Bartholemew,

Sorry I misunderstood you the first time. I know the ACOG you are talking about, the JP-TA01. It's got a simplified reticle with stadia calibrated for 75 or 77gr bullets from the 20" 1:8" barrel.

I like the TA11 & BAC for speed and its eye relief; I may consider the JP-TA01 in the future, but only if I need the particular feature of its unique reticle. John Paul suggested the JP-TA01 a good choice for the carbine portion of the ITRC match due to the simplified precise reticle, when speed is not paramount.

Correia,

Notice the short rail on the forward end of the handguard. It is there to mount either a Doctor-type red-dot or a short-range iron sight -- the latter of which allows me to stay in "Modified/Tactical" division in 3Gun and have both a very fast short-range sight (irons) and an effective medium/long-range sight (ACOG).

-z

 

[jem375]

Zak..........my son and I were out at our gun club and met John Paul out there shooting some of his ar15's.......he let us shoot a couple of them, and they shot really nice at the 100 yard range.............we ended up with DPMS's, but, they have JP triggers on them.............

 

[Phil in Seattle]

You'd be surprised how much filth and crap was stuck inside of the brake from a few years of shooting, truely sickening.

No I wouldn't

 

[Bergeron]

Beautiful piece.

JP's web site mentions that the reduced mass bolt carrier is innappropriate for law enforcement, stating that it lacks the reliability of a standard bolt carrier setup, but that it possesses superior recoil charcteristics. Have you noticed a difference in reliablity or recoil as compared to a standard AR?

 

[Zak Smith]

Bergeron,

Because of travel, work, and weather, I haven't put but 50 rounds through this rifle so far. No malfunctions of any kind, but that's hardly a meaningful test. This weekend I hope to get out and finish setting up this rifle, tune the adjustable gas system, etc. Then I'll do a side-by-side comparison to an AR with the standard bolt carrier.

The low-mass bolt carrier is made of aluminum with what appears to be a hard-anodize finish. It uses the standard bolt & firing pin. I would expect the use of aluminum decreases the ultimate strength of this part and has the possibility of increased wear.

I'll post an update when I've wrung it out.

-z

 

[uglygun]

Aluminum?

I wouldn't expect it to last too terribly long if that were the case.

Aluminum carriers have been done before, in an attempt to bring the rate of fire with full auto AR15/M16s up to the 1200rpm range. Carriers would begin chewing themselves up pretty quick.

You posted pics of the gun, can you get a couple pics of the carrier?

 

[Zak Smith]

uglygun,

Yup, aluminum. I don't know if JP has had any "wear out" yet, but I'm sure they'll take care of me if it does.

I can post some pictures of the bolt carrier as soon as my new digital camera shows up in a few days.

-z

 

[Zak Smith]

Bolt Carrier.

Here are some pictures of the LW bolt carrier:

-z

 

[Zak Smith]

Adjustable Gas Block:

Offset tac-rail for short-range iron sight or JPoint/Doctor:

IAI - Integral ACOG Interface (the slot & holes in the upper). I'm not using it with the TA11.

Oversized Magwell and solid trigger guard floor

Muzzle comp

Hidden dovetails on lower receiver

Machined lightening cuts in upper. Note how much extra "beef" is in the upper/lower interface area.

-z

 

[BozemanMT]

Enlighten me please
What are the hidden dovetails for?

and yeah, cool rifle.

 

[Zak Smith]

No clue.

 

[WhiteKnight]

Your trees have already shed their leaves?

 

[Zak Smith]

Note the date on the original post.

This rifle just saw use at RM3G and the ITRC:
[ link to larger image ]

[ link to larger image ]

The low-mass aluminum bolt carrier works perfectly in typical 3Gun match conditions. I do not recommend it for something like the ITRC, where stage length and time limits are measured in miles and hours, and dust infiltrates everything.

-z

 

[docgary]

JP CTR-02....advice

Since this thread is 4 years old, I hope the posters are still around...

I'm considering a CTR-02 upper receiver, JP JVAC handguards and gas block
to be mated to my RRA lower (2 stage trigger, Ace skeleton stock)

This will be a build with a Krieger 24 in barrel cut by Compass Lake.
The rifle wil shoot only from bench rest with scope.

Why am i going to all the work instead of buying the complete rifle?
I promised the wife the build will be around $1000!:banghead:

Questions:

• Do you think the upper and lower will mate well and look decent?
  [*]I dont expect the Kreiger will shoot better then the JP -
  [*] its just a question of saving $.

Cost for above - reciever...$350
.........................HG.........150
.......................gas block... 80
....kreiger brl cut with bolt...475
...............misc and tools....100

......................total.... $1150.

JP sells the complete upper for $1375

Any feedback????

TIA docgary

 

[Zak Smith]

I am not sure JP will sell a bare CTR02 upper receiver. There is some value to making sure everything is true and tight when putting the upper together. If you want to save money, consider just using a normal upper receiver or buying an completed upper from CLE. There shouldn't be an fit issues with any in-spec lower, but it will look a little mismatched with a CTR02 upper receiver.

In your cost breakdown, I didn't see the bolt carrier itself (and FP, cam pin, etc) listed.

-z

 

[docgary]

am not sure JP will sell a bare CTR02 upper receiver. There is some value to making sure everything is true and tight when putting the upper together. If you want to save money, consider just using a normal upper receiver or buying an completed upper from CLE. There shouldn't be an fit issues with any in-spec lower, but it will look a little mismatched with a CTR02 upper receiver.
In your cost breakdown, I didn't see the bolt carrier itself (and FP, cam pin, etc) listed. ZAK

Points well taken....
JP does sell the receiver separate...$349
My choice in JP was its overall looks and Billet CNCd with the HG...
Doing a complete upper from CLC was my first idea but aesthetics
are important to me...
However, my concern is the less then perfect mating and overall
loss of 'quality control'....
There's nothing worse than putting good money in a good looking
firearm that shoots sub par...
Given the above, would you not go forward with the project

Thanks ZAK
docgary

 

[Correia]

Wow, zombie thread. In December of 2003, I said that I didn't really like ARs.

Man, I guess I'm as big a flip flopper as John Kerry. I just hadn't owned a good one back then I guess.