A discussion of build quality…………

[Duke2424]

Thanks for starting this thread, OP. This was on my mind the other day and I was about to start a thread but did not have a chance.

My pleasure man. Im just thankful for all the great responses.

[Warg]

We establish the center of the bore line and then square the barrel up. Then put a 11 degree crown on the barrel. We then polish the crown (if SS barrel).

We only crown barrels if the customer requests it.

C4

Sent from my SM-G900V using Tapatalk

Thanks Grant. Do you check for runout when crowning? Not trying to be difficult- just a question from a potential customer.

[C4IGrant]

Thanks Grant. Do you check for runout when crowning? Not trying to be difficult- just a question from a potential customer.

We use the Manson piloted crowning kit and have never had a single issue. I also do all my own rifles and handgun barrels (.22-.556) with fantastic results.

For the record though, we are NOT trying to sell any services in this thread (nor are we really interested in crowning barrels). I am just explaining how we build personal rifles.


C4

Sent from my SM-G900V using Tapatalk

[markm]

We use the Manson piloted crowning kit and have never had a single issue. I also do all my own rifles and handgun barrels (.22-.556) with fantastic results.

Well that kit is a cheap one to pick up just to have.

[C4IGrant]

Well that kit is a cheap one to pick up just to have.

LOL, well no.


C4

[Duke2424]

Results of thread: 2 Noveske lowers ordered from G&R Tactical. Thanks everybody!

[jerrysimons]

Grant, Do you only crown the barrels of precision builds using stainless barrels? Or have you had any measurable success in accuracy gain by crowning rack grade chrome-lined barrels? Thank You.

[C4IGrant]

Grant, Do you only crown the barrels of precision builds using stainless barrels? Or have you had any measurable success in accuracy gain by crowning rack grade chrome-lined barrels? Thank You.

We crown everything.

We see success with every barrel we have crowned.


C4

[jerrysimons]

We crown everything.

We see success with every barrel we have crowned.


C4

Thanks! How about loc-titing the barrel extension and gas block like I have heard you mention, precision only? Does BCM's "BCM4" upper receiver, with the tighter spec internal diameter barrel extension sleeve, make this loc-tite method unnecessary in your mind?

[C4IGrant]

Thanks! How about loc-titing the barrel extension and gas block like I have heard you mention, precision only? Does BCM's "BCM4" upper receiver, with the tighter spec internal diameter barrel extension sleeve, make this loc-tite method unnecessary in your mind?

Loctiting the barrel extension is a trick used when you have a loose fit. This is not needed with the BCM M4 upper receivers.


C4