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308 AR10 Build Info/Picture Thread

jLorenzo said:
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?
Click to expand...
This is what you want. Works for AR15 and AR10.

www.opticsplanet.com

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

Following this thread for more pics 👍
 
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.
 

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45-90 said:
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.
Click to expand...
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.
 
jLorenzo said:
I will probably grab that. Whats the best if any DIY option for the moment?
I have the Wheeler AR15 one.
Click to expand...
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.

SD20-173-2T.jpg

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.
 
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JR1200W3 said:
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.
Click to expand...
Midwest Industries and Geissele sell versions. The rod needs a vertical flag to prevent the receiver from twisting against the barrel extension pin.
 
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JR1200W3 said:
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.
Click to expand...
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.
 
Cascade Hemi said:
Midwest Industries and Geissele sell versions. The rod needs a vertical flag to prevent the receiver from twisting against the barrel extension pin.
Click to expand...
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.
 
Cascade Hemi said:
Midwest Industries and Geissele sell versions. The rod needs a vertical flag to prevent the receiver from twisting against the barrel extension pin.
Click to expand...
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.
 
msgriff said:
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.
Click to expand...
No. Geissele and MI sell versions of 45-70's rod. MI is the only one of the two with the vertical flag.
 
The JP vise blocks are vastly superior to any reaction rod.

IMO anything that uses the holes in the receiver lugs is garbage.
 
bf2junky said:
The JP vise blocks are vastly superior to any reaction rod.

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

1714078208883.jpeg
 
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357Max said:
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
Click to expand...
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.
 
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 said:
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.
Click to expand...
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.
 
bf2junky said:
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.
Click to expand...
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.
 
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Anybody have pics of groups shot out of a Craddock precision barrel? Looking at one made out of Rock Creek blank.
 
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
 
JR1200W3 said:
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
Click to expand...
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
 
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jLorenzo said:
Sick. How does it shoot?
Click to expand...
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...
 
DKN83 said:
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
Click to expand...
Wow. What did that run you?
 
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