AR barrel bedding

[daddyscleo]

Just a thought. Thinking about various methods of bedding an AR barrel it occurred to me that a few warm up shots create enough heat expansion to secure the same effect as bedding or an interference fit. What do you guys think?

 

[SKWERLZ]

I get upper receivers that require you to heat the receivers to install the barrel and barrels with quality extensions like the WOA’s.

 

[LVLAaron]

All of mine are bedded.

Thread 'AR Accurizing'

Apr 6, 2025

Historic floods and Nessie kept me out of the home range this weekend, so I thought I'd work on something a little different.




Thought I'd take this beater AR I built a barrel for and would try and improve it. Bushed the takedown pin holes and adjusted location to take up the slop between the upper and lower. Now she's tight as a glove.








Next challenge is getting a Rifle-1" straight gas tube to fit the adjustable gas block I have for this. :|

• LVLAaron
• Replies: 103
• Forum: Gun Project Questions & Gunsmithing

• 
• 

 

[SKWERLZ]

All of mine are bedded.

Thread 'AR Accurizing'

Apr 6, 2025

Historic floods and Nessie kept me out of the home range this weekend, so I thought I'd work on something a little different.




Thought I'd take this beater AR I built a barrel for and would try and improve it. Bushed the takedown pin holes and adjusted location to take up the slop between the upper and lower. Now she's tight as a glove.








Next challenge is getting a Rifle-1" straight gas tube to fit the adjustable gas block I have for this. :|

• LVLAaron
• Replies: 103
• Forum: Gun Project Questions & Gunsmithing

• 
• 

-1 or +1?
If never heard of -1 rifle has system.

Rifle speed has straight gas tubes

 

[LVLAaron]

-1

18-Inch Varmint Uppers, 1-8 Twist (.223/5.56)

18 inch Varmint Upper 223 556 1-8 twist

www.whiteoakarmament.com

 

[SKWERLZ]

-1

18-Inch Varmint Uppers, 1-8 Twist (.223/5.56)

18 inch Varmint Upper 223 556 1-8 twist

www.whiteoakarmament.com

Me comprende now.

I can see a short rifle gas being nice on an 18”.

 

[LVLAaron]

It is a really pleasant shooter.

 

[rickiesrevenge]

I get upper receivers that require you to heat the receivers to install the barrel and barrels with quality extensions like the WOA’s.

What recievers require heat to install a barrel?

 

[MasterYoda]

Depends on your barrel extension

 

[Walt Krafft]

Just a thought. Thinking about various methods of bedding an AR barrel it occurred to me that a few warm up shots create enough heat expansion to secure the same effect as bedding or an interference fit. What do you guys think?

You would need to shoot a lot to get the chamber end hot enough to expand very much. Would you want the rifle to be inaccurate or have a drifting zero until it warms up? Blue Locktite always worked well for me. Lots of over thinking about this imo.

 

[LVLAaron]

What recievers require heat to install a barrel?

BCM are heat to fit uppers.

White Oak sells oversized barrel extensions, they are heat to fit by proxy.

Don't mix the two.

 

[distinguished]

This has all been tried before. Some say do it and some say it doesn't matter. I have never seen a difference on target, except for when bedding the back of the upper receiver to the lower. That did make a bit of difference in reducing elevation dispersion. For the average shooter, it will not make any noticeable difference.

 

[David Milisock]

This has all been tried before. Some say do it and some say it doesn't matter. I have never seen a difference on target, except for when bedding the back of the upper receiver to the lower. That did make a bit of difference in reducing elevation dispersion. For the average shooter, it will not make any noticeable difference.

Not being a builder of rifles, I can only speak from experience from shooting. My Colt A2 in 5.56 shoots 1" average at 100 yards with hand loads. My Aero Precision M4E in 6 ARC shoots an average of 1/2" at 100 yards with 105 Hornady match. I've seen AR 15's in 6 ARC that cost more than twice as much as my Aero and shoot .4", .5" groups with 105 match ammunition.

For me an additional $1,500 will not serve me at all. If I can establish, even a lean to rest I can hit a deer in the head at 300 yards in just a few seconds. For a rifle and scope that was just under $2,000 do I need more?

With that said the rifle gets carried more than shot.