308 AR10 Build Info/Picture Thread

[bf2junky]

I am going to need a LR308 upper clam shell to put in a vice and put the barrel on? A regular AR15 size one wont work correct?

This is what you want. Works for AR15 and AR10.

JP Enterprises Universal Vise Clamp For Ar Flat Top JPVC Gun Type: Universal, Color: Red, $4.20 Off w/ Free S&H

Shop JP Enterprises Universal Vise Clamp For Ar Flat Top | $4.20 Off 5 Star Rating on 4 Reviews for JP Enterprises Universal Vise Clamp For Ar Flat Top + Free Shipping...

www.opticsplanet.com

 

[sroc112]

Anxiously awaiting the start of my first ar10/308 build.

Following this thread for more pics

 

[powdahound76]

@jLorenzo

16" 308 for you. ADM UIC 10 builders kit. 16" fluted rifle length gas. JP LMOS BCG, SCS buffer system. Super smooth recoil impulse. 155 Palmas at 2700fps, and 125gr blems at 2820fps. But the Barnes 130gr TTSX at 2800 are the nasty business. Love this gun.

View attachment 8401953

I missed it, what brand barrel?

Exactly what I am wanting.

Thanks

 

[JR1200W3]

I missed it, what brand barrel?

Exactly what I am wanting.

Thanks

Rainier Ultra Match.

 

[powdahound76]

Thanks man

 

[jLorenzo]

This is what you want. Works for AR15 and AR10.

JP Enterprises Universal Vise Clamp For Ar Flat Top JPVC Gun Type: Universal, Color: Red, $4.20 Off w/ Free S&H

Shop JP Enterprises Universal Vise Clamp For Ar Flat Top | $4.20 Off 5 Star Rating on 4 Reviews for JP Enterprises Universal Vise Clamp For Ar Flat Top + Free Shipping...

www.opticsplanet.com

I will probably grab that. Whats the best if any DIY option for the moment?
I have the Wheeler AR15 one.

 

[45-90]

I use a reaction rod as the industry calls it.
I made my own.
It's 17" long 1.180" in dia or 30 mm with a vise flat milled, and diameter turned down and milled to fit the barrel extension.
The upper reciever slides over the rod and locks into the barrel extension.
Or for indexing to get at handguard screws, etc.
An excellent tool for working on ARs use the 1" dia steel for the AR 15.
I do all the work on the Bridgeport milling table, as seen here.

 

[JR1200W3]

I use a reaction rod as the industry calls it.
I made my own.
It's 17" long 1.180" in dia or 30 mm with a vise flat milled, and diameter turned down and milled to fit the barrel extension.
The upper reciever slides over the rod and locks into the barrel extension.
Or for indexing to get at handguard screws, etc.
An excellent tool for working on ARs use the 1" dia steel for the AR 15.
I do all the work on the Bridgeport milling table, as seen here.

What's he supposed to do with that information? You think he's going to make his own? Clearly he's looking for something to buy. Your post informs nothing, just another weird science project out a 45-90s garage where everything is a boast.

 

[msgriff]

I will probably grab that. Whats the best if any DIY option for the moment?
I have the Wheeler AR15 one.

You can get this from Squirrel Daddy gunsmith tools for around $26 including shipping. They can be modified to also work with an AR-15 with some basic machine work.

ETA: If you're going to use this type of product, sandwich the upper in the vise. Do not position the upper vertically with vise only clamping the fixture, which will put all the stress on the pivot/takedown lugs.

 

[Cascade Hemi]

What's he supposed to do with that information? You think he's going to make his own? Clearly he's looking for something to buy. Your post informs nothing, just another weird science project out a 45-90s garage where everything is a boast.

Midwest Industries and Geissele sell versions. The rod needs a vertical flag to prevent the receiver from twisting against the barrel extension pin.

 

[45-90]

What's he supposed to do with that information? You think he's going to make his own? Clearly he's looking for something to buy. Your post informs nothing, just another weird science project out a 45-90s garage where everything is a boast.

You can buy one...or build one.
He, or anyone else may choose to build one, if someone shows him what to do, & how it works, or... some people have relatives and friends to help them out, who have access to the needed tools.
I do lots of projects for friends, and relatives, free of charge, most are hobbies like off road vehicles or motorcycles.
I spend many hours helping on their projects.
Some people like to learn and enjoy building it themselves, or with the help of others, learn to overcome obstacles. And gain more experience and knowledge as the work on their hobbies or other endeavors. So one never knows where others will take what they learn...maybe start a business, be a world class shooter.

It's how we learn and grow as a species is sharing ideas and information.
No such thing as too much information on any subject, a starting builder, may become your next Hornady Manufacturing Company.

 

[JR1200W3]

Midwest Industries and Geissele sell versions. The rod needs a vertical flag to prevent the receiver from twisting against the barrel extension pin.

Ya, If I was in the market for an assembly tool I would buy a reaction rod. I think it is the better way to go.

 

[msgriff]

Midwest Industries and Geissele sell versions. The rod needs a vertical flag to prevent the receiver from twisting against the barrel extension pin.

Maybe I misunderstood your post, but do you have a link for the Geissele AR-10/308 RR with a vertical flag/fin? As far as I know, they only offer the Super Reaction Rod for AR-15s, which uses anti-rotation lugs that lock into the ejection port.

 

[Cascade Hemi]

Maybe I misunderstood your post, but do you have a link for the Geissele AR-10/308 RR with a vertical flag/fin? As far as I know, they only offer the Super Reaction Rod for AR-15s, which uses anti-rotation lugs that lock into the ejection port.

No. Geissele and MI sell versions of 45-70's rod. MI is the only one of the two with the vertical flag.

 

[bf2junky]

The JP vise blocks are vastly superior to any reaction rod.

IMO anything that uses the holes in the receiver lugs is garbage.

 

[jLorenzo]

I'm going with the JP. Not spending 200$ for a rod.

 

[bf2junky]

I'm going with the JP. Not spending 200$ for a rod.

You’ll find them very useful. Only thing they’re not going to work for are A1 or A2 uppers. Any flat top AR receiver you’ll be good to go.

 

[357Max]

The JP vise blocks are vastly superior to any reaction rod.

IMO anything that uses the holes in the receiver lugs is garbage.

I disagree on that. Superior to a clam shell for sure, but not a MI Reaction rod. The Midwest Rod with the sail on top locks the upper alignment with the extension lugs. This prevents any possible shear on the extension pin when torquing the barrel nut. Also very handy when mounting & leveling a scope.

 

[bf2junky]

I disagree on that. Superior to a clam shell for sure, but not a MI Reaction rod. The Midwest Rod with the sail on top locks the upper alignment with the extension lugs. This prevents any possible shear on the extension pin when torquing the barrel nut. Also very handy when mounting & leveling a scope.

View attachment 8404772

JP vise blocks provide the same support and work for both platforms. I like the MI rod, the JP blocks are better if you have an AR15 and AR10.

I mean according to JP, they build their rifles in house with these blocks.

 

[Cascade Hemi]

Whether you clamp to the receiver or the barrel extension, if you don't secure the two together you will subject the barrel extension pin and receiver slot to twisting force. You can rip out pin and/or deform the receiver slot.

 

[Cascade Hemi]

I'm going with the JP. Not spending 200$ for a rod.

https://dackoutdoors.com/product/.308-upper-receiver-rod-black

 

[bf2junky]

Whether you clamp to the receiver or the barrel extension, if you don't secure the two together you will subject the barrel extension pin and receiver slot to twisting force. You can rip out pin and/or deform the receiver slot.

I see what you’re saying. But I think usually the extension pin is only in danger when people torque their muzzle devices on too much.

 

[Cascade Hemi]

I see what you’re saying. But I think usually the extension pin is only in danger when people torque their muzzle devices on too much.

The pin is usually in danger when the pin wasn't installed correctly by the barrel manufacturer. You normally find that out when you're torquing the barrel nut while clamping or pinning the receiver. Mostly the receiver slot just deforms.

 

[jLorenzo]

build pic thread:
Criterion 308 barrel, Aero build.

View attachment 8398280


Faxon 6.5CM:

View attachment 8398292

Barrel lengths?

 

[357Max]

Anyone on the fence here you go. Clearance deal at Midway now.

Midwest Industries LR-308 Upper Receiver Action Rod

The Midwest Industries Upper Receiver Action Rod is the ultimate tool for barrel nut installs or removal. It is excellent for removing stubborn/seized...

www.midwayusa.com

 

[jLorenzo]

Anybody have pics of groups shot out of a Craddock precision barrel? Looking at one made out of Rock Creek blank.

 

[jLorenzo]

Anyone on the fence here you go. Clearance deal at Midway now.

Midwest Industries LR-308 Upper Receiver Action Rod

The Midwest Industries Upper Receiver Action Rod is the ultimate tool for barrel nut installs or removal. It is excellent for removing stubborn/seized...

www.midwayusa.com

View attachment 8405390

Thanks I grabbed one.

 

[DKN83]

Picked her up today, brand new G28. No clone, original optics etc. Christmas is early this year

 

[JR1200W3]

I feel like this is exactly how you would expect to see a bipod mounted on an exclusive, super expensive, military only sniper rifle in the hands of a civilian collector

 

[DKN83]

I feel like this is exactly how you would expect to see a bipod mounted on an exclusive, super expensive, military only sniper rifle in the hands of a civilian collector

If there is something wrong with the bipod please let me know. This is how i got it directly from HK. I am no collector at all, the rifle will be shot until it falls apart

You cant move it further forward, asked HK and they told me they did that due to impact shifts during testing.

Daniel

 

[jLorenzo]

View attachment 8410642

Picked her up today, brand new G28. No clone, original optics etc. Christmas is early this year

Sick. How does it shoot?

 

[DKN83]

Sick. How does it shoot?

Will be testing her in about 2 weeks i guess. Waiting for ammunition. Will post a few pics, V0 and targets to let you guys know.

I am a bolt action guy so this is going to be interesting. First impression: very well made, cheek riser fits perfectly concerning height. If i raise my head slightly i have a perfect view through the T1. Perfectly centered behind the optic, was a bit concerned since i prefer the edgy TRG cheek rest.

The PMII is out of this world as expected.

Weight is heavy even for me although im used to TRGs and AIs.

HK will burn in hell though for the trigger installed. Will need lots of dry fire to get used to that. And i am used to 1-2kg triggers.

So far...

 

[JR1200W3]

If there is something wrong with the bipod please let me know. This is how i got it directly from HK. I am no collector at all, the rifle will be shot until it falls apart

You cant move it further forward, asked HK and they told me they did that due to impact shifts during testing.

Daniel

Wow. What did that run you?

 

[Mike_in_FL]

I am going to need a LR308 upper clam shell to put in a vice and put the barrel on? A regular AR15 size one wont work correct?

You can just hold the barrel if you want: https://www.luth-ar.com/product/barrel-vise-jaws/

 

[DKN83]

Wow. What did that run you?

The Set is up to almost 15k in germany without suppressor. Got it for around 11k including the suppressor. Would not pay the price asked these days. Not worth 15k imho.

 

[PappyM3]

I feel like this is exactly how you would expect to see a bipod mounted on an exclusive, super expensive, military only sniper rifle in the hands of a civilian collector

You mean, exactly how the military users have it mounted?

 

[TonyTheTiger]

That H&K is both the coolest and ugliest rifle around.

 

[D̷e̷v̷i̷l̷D̷o̷c̷A̷Z̷]

That H&K is both the coolest and ugliest rifle around.

The’re GRRRRRREAT!

Surprised you didn’t know that Tony

 

[Cascade Hemi]

[GUCCI BIPOD MANUFACTURERS PUNCHING THE AIR]

 

[jLorenzo]

I ordered one of these,

Rainier Arms Match .308 Barrel

Rainier Arms Match .308 Barrel Many have asked us to build a barrel with the same workmanship as our UltraMatch barrels while keeping it more affordable. We are able to reach our goal by sourcing a very high end barrel blank at an affordable price. We sta

www.rainierarms.com

couldn't justify the Krieger at this point, wouldn't want to rip a bunch of M80 ball out of a Krieger.
Seems to have some good reviews. SA gas block also on the way and I should be good to go.

 

[jLorenzo]

The Set is up to almost 15k in germany without suppressor. Got it for around 11k including the suppressor. Would not pay the price asked these days. Not worth 15k imho.

View attachment 8411132View attachment 8411133View attachment 8411134

Nice tank, you running co2?

 

[jLorenzo]

Will be testing her in about 2 weeks i guess. Waiting for ammunition. Will post a few pics, V0 and targets to let you guys know.

I am a bolt action guy so this is going to be interesting. First impression: very well made, cheek riser fits perfectly concerning height. If i raise my head slightly i have a perfect view through the T1. Perfectly centered behind the optic, was a bit concerned since i prefer the edgy TRG cheek rest.

The PMII is out of this world as expected.

Weight is heavy even for me although im used to TRGs and AIs.

HK will burn in hell though for the trigger installed. Will need lots of dry fire to get used to that. And i am used to 1-2kg triggers.

So far...

What kind of reticle in the S&B? Are you German?

 

[DKN83]

Nice tank, you running co2?

Hey, no, no CO2. Just a few plant and Shrimps. Everything runs fine, just growing a bit slower!

What kind of reticle in the S&B? Are you German?

The reticle is a patent of H&K. Yes i am from germany. Thats why i am restricted to 10 round mags....working on papers for 20-30 round mags though.

 

[JR1200W3]

You mean, exactly how the military users have it mounted?

View attachment 8411158
View attachment 8411159

I genuinely didn't know that about this rifle. That seems like a pretty dumb design. Do you know why HK designed it like this?

 

[DKN83]

I genuinely didn't know that about this rifle. That seems like a pretty dumb design. Do you know why HK designed it like this?

Its due to a zero shift when you mount it further forward. Thats why there is no rail at all in that area of the handguard.

 

[Cascade Hemi]

I ordered one of these,

Rainier Arms Match .308 Barrel

Rainier Arms Match .308 Barrel Many have asked us to build a barrel with the same workmanship as our UltraMatch barrels while keeping it more affordable. We are able to reach our goal by sourcing a very high end barrel blank at an affordable price. We sta

www.rainierarms.com

couldn't justify the Krieger at this point, wouldn't want to rip a bunch of M80 ball out of a Krieger.
Seems to have some good reviews. SA gas block also on the way and I should be good to go.

I hope you bought the 18".

 

[xxflyingturtlexx]

The Set is up to almost 15k in germany without suppressor. Got it for around 11k including the suppressor. Would not pay the price asked these days. Not worth 15k imho.

View attachment 8411132View attachment 8411133View attachment 8411134

I didnt know Germans could own those guns. Adds to my jealousy!!!!

 

[DKN83]

I didnt know Germans could own those guns. Adds to my jealousy!!!!

Government currently tries to ban semiautomatic rifles, not sure if they manage to do that though. Thats why i thought now or never.

 

[jLorenzo]

I hope you bought the 18".

I did.

 

[Shoreglide]

Promised myself I was done building any more AR’s for a while, but couldn’t resist a great deal for a new Proof CF 18” 308 barrel.

Now to decide on a receiver set. My two current large frame rifles are on Xanthos Lite receiver sets, but I’m leaning toward MWS, SP10 etc for this.
So it begins…