The AR Thread

tx_shooter

It is not a war crime the first time.
Staff member
Ok Im Interested in duplicating this build, est cost? I have been wanting a large caliber hunting rifle that I can use a 30cal can on, only thing I have now is 300bo but I need something with the 300+ yard range with power.

Not concerned/interested in the forearm guard or stock. Part numbers please

The barrel and adjustable gas block are JP Rifles. The barrel is $530 and gas block is $80. I bought earlier than I planned so as to take advantage of Black Friday 10% off. The 6.5 Grendel is pretty good for 400 yds and less on whitetail sized game. That is my intent with it.

barrel adjustable gas block
 

tx_shooter

It is not a war crime the first time.
Staff member
By far my favorite grip. I tried some of the more name brand grips and I went back to my el cheapo grip every time.
 

Taco Loco

Tired and Lazy, married to ‘The Laundry Fairy’
The barrel and adjustable gas block are JP Rifles. The barrel is $530 and gas block is $80. I bought earlier than I planned so as to take advantage of Black Friday 10% off. The 6.5 Grendel is pretty good for 400 yds and less on whitetail sized game. That is my intent with it.

barrel adjustable gas block
What bolt and upper receiver?
 

tx_shooter

It is not a war crime the first time.
Staff member
What bolt and upper receiver?

Bolt came with the barrel; matched set. Upper receiver was one I bought from @Anathollo . I do not remember the name; nothing uber fancy though. The rest of the bolt carrier group is a Palmetto State Armory Nickel Boron BCG. I am probably going to order an aluminum BCG to drop some ounces there too.

If accuracy is not up to par I will go with a "better"upper receiver but honestly I would be amazed if this thing does not shoot beyond my needs. In the end I will have a dedicated magnesium lower receiver for it. At that time the lower will get the "lightweight" works so as to try to get the whole thing at 6 lbs or less.
 

Taco Loco

Tired and Lazy, married to ‘The Laundry Fairy’
Bolt came with the barrel; matched set. Upper receiver was one I bought from @Anathollo . I do not remember the name; nothing uber fancy though. The rest of the bolt carrier group is a Palmetto State Armory Nickel Boron BCG. I am probably going to order an aluminum BCG to drop some ounces there too.

If accuracy is not up to par I will go with a "better"upper receiver but honestly I would be amazed if this thing does not shoot beyond my needs. In the end I will have a dedicated magnesium lower receiver for it. At that time the lower will get the "lightweight" works so as to try to get the whole thing at 6 lbs or less.

@Anathollo

What rifling does JP use in their barrels?
 

tx_shooter

It is not a war crime the first time.
Staff member
JP Supermatch™ barrels are manufactured to our highly exacting specifications for superior performance and optimal fit with our components. These barrels are turned from the finest 416R stainless steel and then lead-lapped, button rifled using state-of-the-art equipment and air-gauged to ensure minimal bore diameter run out for peak accuracy. We also make a point of cryogenically treating all of our rifle-caliber Supermatch™ barrels for cold bore shot predictability, minimum thermal drift, outstanding accuracy and extended barrel life.

All Supermatch™ barrels (excepting 9mm) come with an individually head-spaced JP EnhancedBolt™ assembly and can be purchased in either Black Teflon® or one of several stainless finish levels.

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Per their website. @Taco Loco
 

Taco Loco

Tired and Lazy, married to ‘The Laundry Fairy’
JP Supermatch™ barrels are manufactured to our highly exacting specifications for superior performance and optimal fit with our components. These barrels are turned from the finest 416R stainless steel and then lead-lapped, button rifled using state-of-the-art equipment and air-gauged to ensure minimal bore diameter run out for peak accuracy. We also make a point of cryogenically treating all of our rifle-caliber Supermatch™ barrels for cold bore shot predictability, minimum thermal drift, outstanding accuracy and extended barrel life.

All Supermatch™ barrels (excepting 9mm) come with an individually head-spaced JP EnhancedBolt™ assembly and can be purchased in either Black Teflon® or one of several stainless finish levels.

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Per their website. @Taco Loco

:) Ok thanks, I did see the information on the actual links to each barrels.
 

Anathollo

Armorall is my choice of lube
Staff member
@Anathollo

What rifling does JP use in their barrels?
My buddy shot a 1" group at 200 yards then a 1.5" group at 300 yards with .223 77gr Black Hills with his JP barrel IIRC. I've been drinking so I may be off a bit but I was amazed at the time. He has a full JP rifle build.
 

Silverback

Lima Gulf Bravo Foxtrot Juliet Bravo
Lower is assembled. Had to order a few more parts though. One was a new bolt catch release button. The one that is on it I don't care for. LOL Second the BCG's fucking firing pin catch cotter pin dealio.. It won't go back in the fucking hole. I can get it in the outside hole using some needlenose but no matter of fucking with it, twisting whatever, will get it in the otherside. I pulled it out and now its starting to spread out a smidge. So I ordered 3 new ones (spares) and one of these PERMA Pin Firing Pin Retaining Pin and one of these http://www.tacfireinc.com/firing-pin-retainer-5-56-9mm--p-809.html Figure if I like them I'll move one to another BCG.

But its all cleaned and assembled. Do have an issue with the selector switch, its not indexing? Its got the spring and detent pin pointed the correct position. But its not catching. I need to take the grip off and fuck with it. Just don't want to do it at the moment. Not sure what I did wrong as it appears correct, probably something simple.



IMG_5451 (Medium).png


IMG_5452 (Medium).jpg
 

Anathollo

Armorall is my choice of lube
Staff member
Lower is assembled. Had to order a few more parts though. One was a new bolt catch release button. The one that is on it I don't care for. LOL Second the BCG's fucking firing pin catch cotter pin dealio.. It won't go back in the fucking hole. I can get it in the outside hole using some needlenose but no matter of fucking with it, twisting whatever, will get it in the otherside. I pulled it out and now its starting to spread out a smidge. So I ordered 3 new ones (spares) and one of these PERMA Pin Firing Pin Retaining Pin and one of these http://www.tacfireinc.com/firing-pin-retainer-5-56-9mm--p-809.html Figure if I like them I'll move one to another BCG.

But its all cleaned and assembled. Do have an issue with the selector switch, its not indexing? Its got the spring and detent pin pointed the correct position. But its not catching. I need to take the grip off and fuck with it. Just don't want to do it at the moment. Not sure what I did wrong as it appears correct, probably something simple.



View attachment 12363

View attachment 12364
What brand is the selector switch?

And it sounds like you pushed the firing pin in to much when trying to put the cotter pin in. Either that or you need to throw that BCG in the trash...
 

Anathollo

Armorall is my choice of lube
Staff member

Anathollo

Armorall is my choice of lube
Staff member
I got this beauty in the mail! Didn't have much time to play with it as I was unpacking. I know it's expensive (as much as a complete PSA AR) but I'm gonna run the piss outta this. This Variable Mass bolt carrier is meant for AR pistols and suppressed applications as well as 6.5Grendel builds.
20181209_204801.jpg
 

Anathollo

Armorall is my choice of lube
Staff member
Oh, JP enterprises shipped a sample pack of Lucas oil with my BCG. I looked into Lucas gun oil a bit the other day and ran across this for anyone who wants to make their own lube.
Screenshot_20181204-071141_Chrome.jpg
 

Anathollo

Armorall is my choice of lube
Staff member
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