OBR 7.62 Barrel Swap??

green338 2.0 · May 11, 2013

Has anybody here gone with a different barrel on their OBR? I would like to go 260, but not sure where to start...

Falsecrack · May 12, 2013

green338 2.0 said:
Has anybody here gone with a different barrel on their OBR? I would like to go 260, but not sure where to start...

Not sure about the .260, but I seem to recall once seeing a PredatAR on GB that had been rebarreled by GA Precision. Might wanna call George and the boys, and start from there. I must admit, an OBR chambered for .260 does intrigue me. Good luck, OP.

-Nick- · May 12, 2013

Just becauseit needs said... At least with a GAP-10 you get that as a standard option.

green338 2.0 · May 18, 2013

GAP is only working on POF, GAP, and Hogan platforms. Still looking for info on a 260 OBR. I know I've seen one in the past, I just want more info on the barrel extension usability...

green338 2.0 · May 18, 2013

_Nick_ said:
Just becauseit needs said... At least with a GAP-10 you get that as a standard option.

I have nothing against GAP, but I just never liked how they just took a platform and made it their own...no originality..

With Larue, JP, LMT, POF, Knight, etc, all have invested a lot in R&D and it shows.

J Mack · May 18, 2013

I have an OBR with an aftermarket barrel and I’m switching again.
I had the first barrel chambered to work with the factory Larue bolt and decided I like the way my JP’s shoot better with their low mass bolt carrier group so I’m switching to a JP barrel and bolt carrier group in my OBR, My JP .260 shoots lights out as does my 308 but I agree I like the looks of the OBR better and the 20MOA top rail works well for my needs so it’s not a big deal to do a barrel swap to get it to shoot how I want.

JP barrels come with a bolt and I believe I saw .260 barrels in stock when I ordered mine.
I ordered the Wilson adjustable Lo-Profile Gas Block, .937", Rifle Length Straight Gas Tube
to go with the JP barrel.

FYI: Larue uses an AR-10 style BCG and the JP uses the DPMS style so you’ll need to keep you barrel and BCG the same when swapping.

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-Nick- · May 18, 2013

green338 2.0 said:
I have nothing against GAP, but I just never liked how they just took a platform and made it their own...no originality..

With Larue, JP, LMT, POF, Knight, etc, all have invested a lot in R&D and it shows.

Not exactly. The only thing they did is use POF's monolithic handguard set-up and even then the rifle length handguard I believe is only available threw GAP. They took a lot of the best points and put them together in a complete package IMO. George also I believe was the first to start doing the 6CM for purchase...

poison123 · May 18, 2013

_Nick_ said:
Not exactly. The only thing they did is use POF's monolithic handguard set-up and even then the rifle length handguard I believe is only available threw GAP. They took a lot of the best points and put them together in a complete package IMO. George also I believe was the first to start doing the 6CM for purchase...

I believe George invented the 6cm to be exact......just like he did with the 6mm crusader etc. Its very short sighted to say "you never liked how they took a existing platform". All Larue did was come up with a handguard design....not exactly ground breaking if you ask me, etc. JP at least came up with a new design for the bolt carrier, and the others on the list are about the same.

I'll take a tuned up POF by GAP with a badass caliber by George vs the same old tired .308win by say Larue any day of the week.

-Nick- · May 18, 2013

poison123 said:
I believe George invented the 6cm to be exact......just like he did with the 6mm crusader etc. Its very short sighted to say "you never liked how they took a existing platform". All Larue did was come up with a handguard design....not exactly ground breaking if you ask me, etc. JP at least came up with a new design for the bolt carrier, and the others on the list are about the same.

I'll take a tuned up POF by GAP with a badass caliber by George vs the same old tired .308win by say Larue any day of the week.

I can see how that sounded. I meant the only thing of POF they used was the monolithic. JP also came up with a unique side charger. For the record though man I wasn't the one to say I never liked anything in regards to the GAP-10...

green338 2.0 · May 18, 2013

poison123 said:
I believe George invented the 6cm to be exact......just like he did with the 6mm crusader etc. Its very short sighted to say "you never liked how they took a existing platform". All Larue did was come up with a handguard design....not exactly ground breaking if you ask me, etc. JP at least came up with a new design for the bolt carrier, and the others on the list are about the same.

I'll take a tuned up POF by GAP with a badass caliber by George vs the same old tired .308win by say Larue any day of the week.

_Nick_ said:
Not exactly. The only thing they did is use POF's monolithic handguard set-up and even then the rifle length handguard I believe is only available threw GAP. They took a lot of the best points and put them together in a complete package IMO. George also I believe was the first to start doing the 6CM for purchase...

You're missing the point?! First off, I said, "Larue, JP, LMT, POF, Knight, etc, all have invested a lot in research and development (R&D) and it shows." These brands have altered several parts throughout their rifles and made them unique to their liking. With Larue Tactical, they have designed their own gas block, barrel extension, and offer a slightly altered bolt carrier group. JP has a side-charging platform, plus all the parts on their rifles were designed by Paul, including like you said, the BCG. Similarly, LMT came up with the true monolithic handgaurd, and their unique barrel mechanism that allows quick barrel changes. Again, these among other manufactures have invested countless doll-hairs (dollars) and time, making their system unique. In sum, this is what I appreciate and love. It doesn't matter if they were small changes or if the changes were not "ground breaking," their creating a product that makes them unique.

GAP on the other hand, took the receiver sets from a company, sourced the gas blocks, BCG's, basically everything...The only thing they did differently was offer a 6CM offering. The only thing the GAP10 has going for them is community ties, and the barrel machine work (again no offense, but APA or SAC could replicate).

I didn't want to turn this into an OBR vs GAP-10 thread. I just want to address your statements. Yes, a GAP-10 could probably outshoot an OBR/MWS/LRP, but that's not my point.

green338 2.0 · May 18, 2013

J Mack said:
 I have an OBR with an aftermarket barrel and I’m switching again.
I had the first barrel chambered to work with the factory Larue bolt and decided I like the way my JP’s shoot better with their low mass bolt carrier group so I’m switching to a JP barrel and bolt carrier group in my OBR, My JP .260 shoots lights out as does my 308 but I agree I like the looks of the OBR better and the 20MOA top rail works well for my needs so it’s not a big deal to do a barrel swap to get it to shoot how I want.

JP barrels come with a bolt and I believe I saw .260 barrels in stock when I ordered mine.
I ordered the Wilson adjustable Lo-Profile Gas Block, .937", Rifle Length Straight Gas Tube
to go with the JP barrel.

FYI: Larue uses an AR-10 style BCG and the JP uses the DPMS style so you’ll need to keep you barrel and BCG the same when swapping.

Thanks for the info! My main question, did you reuse the barrel extension from the old OBR barrel? I might just buy another OBR rifle, just so I could use the upper and build it into a 260. What kind of barrel are you using now?

-Nick- · May 18, 2013

green338 2.0 said:
You're missing the point?! First off, I said, "Larue, JP, LMT, POF, Knight, etc, all have invested a lot in research and development (R&D) and it shows." These brands have altered several parts throughout their rifles and made them unique to their liking. With Larue Tactical, they have designed their own gas block, barrel extension, and offer a slightly altered bolt carrier group. JP has a side-charging platform, plus all the parts on their rifles were designed by Paul, including like you said, the BCG. Similarly, LMT came up with the true monolithic handgaurd, and their unique barrel mechanism that allows quick barrel changes. Again, these among other manufactures have invested countless doll-hairs (dollars) and time, making their system unique. In sum, this is what I appreciate and love. It doesn't matter if they were small changes or if the changes were not "ground breaking," their creating a product that makes them unique.

GAP on the other hand, took the receiver sets from a company, sourced the gas blocks, BCG's, basically everything...The only thing they did differently was offer a 6CM offering. The only thing the GAP10 has going for them is community ties, and the barrel machine work (again no offense, but APA or SAC could replicate).

I didn't want to turn this into an OBR vs GAP-10 thread. I just want to address your statements. Yes, a GAP-10 could probably outshoot an OBR/MWS/LRP, but that's not my point.

So even though they make a great quality rifle assembled from various parts that collectively as a package with varying barrel lengths, calibers, brakes, triggers, etc you can't get together anywhere else they're not comparable because they haven't spent the money on R&D? Lol... Creating an entirely new cartridge is also kind of a big deal. No one was trying to take away from Larue, JP, LMT, or any other great rifle company except the guy who's down playing GAP because they didn't fix something that wasn't broke. And although JP, Larue, KAC, and LMT make great semi-autos... I don't recall them making a bolt that can hold a candle to one of GA Precisions. If it isn't broke then why fix it?

J Mack · May 18, 2013

green338 2.0 said:
Thanks for the info! My main question, did you reuse the barrel extension from the old OBR barrel? I might just buy another OBR rifle, just so I could use the upper and build it into a 260. What kind of barrel are you using now?

I would sell your OBR barrel complete. I got $800.00 for mine with the gas block.
The barrel extensions are very similar and the DPMS style that comes on the JP barrel will work on your Larue upper. Remember to keep bolts, bolt carriers and barrel extensions the same type and you’ll be fine.

 I'm using a Bergara barrel with a DMPS extension head spaced to the Larue bolt. This barrel was chambered with the same reamer that GAP uses for their 308’s and it’s very accurate and reliable.
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Some more info here: http://www.snipershide.com/shooting...ifles/42516-armalite-barrel-w-dpms-upper.html

green338 2.0 · May 18, 2013

_Nick_ said:
So even though they make a great quality rifle assembled from various parts that collectively as a package with varying barrel lengths, calibers, brakes, triggers, etc you can't get together anywhere else they're not comparable because they haven't spent the money on R&D? Lol... Creating an entirely new cartridge is also kind of a big deal. No one was trying to take away from Larue, JP, LMT, or any other great rifle company except the guy who's down playing GAP because they didn't fix something that wasn't broke. And although JP, Larue, KAC, and LMT make great semi-autos... I don't recall them making a bolt that can hold a candle to one of GA Precisions. If it isn't broke then why fix it?

GAP could do whatever they want and anybody could buy whatever they want. But, for me, there's other rifles from other companies that I would buy, before buying the GAP10, just b/c I am not a fan of the receivers or the features offered...Other than the barrel, and the name, I could put together a rifle that utilizes the same parts as the GAP10 from receivers like JD Machine and Mega Arms. Again, nothing wrong with that, it's just not for me anymore.

Oh, and I have nothing against GAP. I've owned several GAP rifles and have used their barrels on a couple AR's. They shoot excellent.

green338 2.0 · May 18, 2013

J Mack said:
 I would sell your OBR barrel complete. I got $800.00 for mine with the gas block.
The barrel extensions are very similar and the DPMS style that comes on the JP barrel will work on your Larue upper. Remember to keep bolts, bolt carriers and barrel extensions the same type and you’ll be fine.

Some more info here: http://www.snipershide.com/shooting...ifles/42516-armalite-barrel-w-dpms-upper.html

Yeah, I was thinking the same thing. I'm going to try and get another OBR for $3,8XX. Sell the complete lower and barrel system and get a good chunk of cash back. It's going to be an expensive 260 upper

J Mack · May 18, 2013

If you go with the JP their heat sink will fit under the Larue hand guard and worth the extra $75.00
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Ballista One · May 19, 2013

J Mack said:
FYI: Larue uses an AR-10 style BCG and the JP uses the DPMS style so you’ll need to keep you barrel and BCG the same when swapping.

Not an accurate statement. As a complete unit, the Armalite and DPMS bolt groups are interchangeable. You can use an Armalite bolt group with a DPMS barrel and vice versa.

-Nick- · May 19, 2013

green338 2.0 said:
GAP could do whatever they want and anybody could buy whatever they want. But, for me, there's other rifles from other companies that I would buy, before buying the GAP10, just b/c I am not a fan of the receivers or the features offered...Other than the barrel, and the name, I could put together a rifle that utilizes the same parts as the GAP10 from receivers like JD Machine and Mega Arms. Again, nothing wrong with that, it's just not for me anymore.

Oh, and I have nothing against GAP. I've owned several GAP rifles and have used their barrels on a couple AR's. They shoot excellent.

I didn't think you had anything against GAP. And everyone's entitled to different tastes in rifles. Mine just happens to be better than yours... lmao jk

Lowlight · May 19, 2013

GAP was also making hyper a accurate AR10s long before a lot of these companies even considered it.

Back in the early 2000s we had a GAP SH AR10 that was also used to by a soldier to win the Army Sniper Competition. It wasn't marketed like recently by others, but at least 8 years before you had 1/2MOA rifles coming out of GAP.

Even further back at ASC when it was still invitational only there were guys shooting GAP AR10s in 260. Talking 2003 and sooner.

The idea their work is ho hum is highly misleading, you just don't get GAP promoting it like the guys trying to make their bones in this segment. You have to scour the old Sniper Country threaded board to find the references it was that long ago. But trust me GAP has been there done it close to 10 years before the rest.

no R&D, more like no clue, as if all the others were doing R&D and not just maching stuff to look slightly different.

J Mack · May 19, 2013

m_gale said:
Not an accurate statement. As a complete unit, the Armalite and DPMS bolt groups are interchangeable. You can use an Armalite bolt group with a DPMS barrel and vice versa.

Not an accurate statement.
My DPMS bolts have a differant head space than the Armalite bolts I have.

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