AR-15 build info.

[leomort]

Any recommendations of who offers good quality left handed bolt carrier group in 223/556? Are the nickel boron bolt carrier better? Thank you for your help.

 

[omegared24]

Any recommendations of who offers good quality left handed bolt carrier group in 223/556? Are the nickel boron bolt carrier better? Thank you for your help.

Not sure what brands but I would stick with phosphate or nitride if not available.

 

[RRomig]

I believe the last one I built was with a stag bolt. As far as I know he’s very happy with it

 

[leomort]

RRomig,

Thank you for feed back regarding Stag's bcg. Sourcing left handed parts is more challenging than I thought. I also found Toolcraft also makes left handed bcg.

 

[rbird7282]

Hey guys had a question for you. I'm looking into getting/building my first AR. I'm still getting the laws down on what's legal and what's not. I wanted to just make sure I have it right.
So AR-15'S chambered in 223/556 and operate on a DI system must have a hbar barrel (does this mean "heavy barrel"), otherwise it's banned in Maryland. If it is piston operated it doesn't need to have the hbar barrel.
If it's chambered in any other caliber it's legal as long as it isn't DI operated.
Am I correct on this? Just trying to make sure I have it correct before I go buying anything

You’re 90% correct. AR’s chambered in other calibers besides .223/5.56 may be DI, there is no law against that.


Sent from my iPhone using Tapatalk

 

[leomort]

I decided to go with Stag's left hand nickel boron bolt carrier group since it was on sale for $129

Figure if it doesn't work out, can go back and try the nitride or phosphide one.

 

[leomort]

Need some barrel input to keep me Maryland legal/compliant for my 223/556 build.

What I would like to find if possible: 16" midgas, 1:8 or 1:7 twist, prefer wylde chamber but 556 is also acceptable.

Thank you for your help!

 

[jrumann59]

I decided to go with Stag's left hand nickel boron bolt carrier group since it was on sale for $129

Figure if it doesn't work out, can go back and try the nitride or phosphide one.

Usually the concern is coatings is how they did it and did they take the thickness of the coating into account when the BCG was manufacturered. You will see bolt lugs that won't close or open due to tight tolerances, rough surfaces in the gas ring channel, gas keys sitting too high because of the gas key being added after the coating. As long as you go in understanding that coatings like NiB can cause issues you at least know here to look when issues arise.

 

[schnauzr]

Need some barrel input to keep me Maryland legal/compliant for my 223/556 build.

What I would like to find if possible: 16" midgas, 1:8 or 1:7 twist, prefer wylde chamber but 556 is also acceptable.

Thank you for your help!

https://criterionbarrels.com/produc...l-mid-length-gas-chrome-lined/?v=7516fd43adaa unfortunately OOS at the manufacturer but other vendors may have it.

 

[SkiPatrolDude]

https://criterionbarrels.com/produc...l-mid-length-gas-chrome-lined/?v=7516fd43adaa unfortunately OOS at the manufacturer but other vendors may have it.

Second criterion. Most, if not all of their barrels are .223 Wylde.

Trust me when I say this... Call them. Ask them how to order an HBAR that qualifies in MD. IYKYK

Their CS is very good. The folks who answer the phone are true SME's on the platform. You aren't getting some random call center employee.

 

[schnauzr]

Second criterion. Most, if not all of their barrels are .223 Wylde.

Trust me when I say this... Call them. Ask them how to order an HBAR that qualifies in MD. IYKYK

Their CS is very good. The folks who answer the phone are true SME's on the platform. You aren't getting some random call center employee.

Good call. Also if buying direct from Criterion they can sell a headspaced BCM bolt with it.

 

[SkiPatrolDude]

Good call. Also if buying direct from Criterion they can sell a headspaced BCM bolt with it.

Buying from them with a headspaced bolt is worth it, if you don't already have the guages. Criterion uses really tight dimensions, I have found, so you may be more likely to have an improperly headspaced bolt than with other barrels. YMMV

 

[leomort]

Thank you to those who replied! Hope Stag Arms nickel boron is decent as I wasn't aware of issues with the way they're coat.

Yes, those Criterion barrels caught my attention but also noticed they're out of stock. I seen Aero Precision has 16" HBAR mid gas barrel as well but don't how good they are as they're significantly cheaper than Criterion barrels.

I noticed some manufacturer said their barrel were left handed? I thought that didn't matter with AR barrel?

Debating whether it's worth waiting for the Criterion barrels to become available? I discovered that they're closed on Fridays so will give them a call next week

 

[omegared24]

Thank you to those who replied! Hope Stag Arms nickel boron is decent as I wasn't aware of issues with the way they're coat.

Yes, those Criterion barrels caught my attention but also noticed they're out of stock. I seen Aero Precision has 16" HBAR mid gas barrel as well but don't how good they are as they're significantly cheaper than Criterion barrels.

I noticed some manufacturer said their barrel were left handed? I thought that didn't matter with AR barrel?

Debating whether it's worth waiting for the Criterion barrels to become available? I discovered that they're closed on Fridays so will give them a call next week

Ballistic Advantage now has HBAR marked barrels as well. Good value.

 

[1841DNG]

Precision Firearms over in Falling Waters WV also makes HBAR barrels for us Maryland folks. I quite like them but I have never shot one of their barrels.

 

[Garet Jax]

Are Colt LPKs still the shizzle?

 

[outrider58]

Are Colt LPKs still the shizzle?

I buy a few replacement parts from G&R Tactical when things get low. They don't sell full parts kits though(that I know of).

 

[Garet Jax]

I buy a few replacement parts from G&R Tactical when things get low. They don't sell full parts kits though(that I know of).

From what I can tell this is a LPK minus FCG - it is $50 too so seems like a great deal.

 

[leomort]

Thank you all for your help in my first AR-15 build! Think it turned out pretty nice for my first attempt!

 

[RRomig]

Thank you all for your help in my first AR-15 build! Think it turned out pretty nice for my first attempt!

Glad it worked out but it doesn’t exist without a picture