16" 7.62x39 Mid-Length 4150 Nitrided Barrel

Question

Q: How is the rifling done on these barrels? Are they cut, button or CHF? I expect they are CHF, but it is not stated anywhere I can see.

Asked by: foty89 - 3/4/2024

Q: Hello BRA, I just want to confirm this barrel is a good fit for my Radical Firearms RF-15 SKU: FR16-7.62X39HBAR-15RPR UPC: 816903023011 MFR#: RF00078 It looks like I'll need to change the gas system from carbine length to mid length which is fine. Any other advice is welcome. I also want to purchase your BCG Part Number: 1509112-1 when it becomes available as well. I'm assuming head space will be fine since both components are yours but I have to ask. Kind regards, Dan

Asked by: dan - 12/23/2023

Q: Will this barrel fit a RF-15? Would I need to make changes to the gas system? If so, what would I need to do? radical firearms fr16-7.62x39hbar-15rpr

Asked by: Dan - 12/20/2023

Q: Are any modification needed to the M4 ramps in most upper receivers in order for them to operate or line up correctly with the barrel extension 30 cal ramps? I'm guessing the ramps in the barrel extension may be slightly wider than the M4 ramps in most upper receivers. Thanks

Asked by: Ken - 10/1/2023

Q: is the feed ramp a single or double feed style ramp

Asked by: jake - 9/9/2022

Q: is there any chance i could order a barrel cut to 14.5"?

Asked by: jacob mason - 9/8/2022

Q: Are you still using the same barrel manufacturer from 2 years ago?

Asked by: joshua - 8/7/2022

Q: I see the gas block journal is 0.750" - What is the barrel diameter immediately behind the threads? Thanks!

Asked by: Dan S - 6/29/2022

Q: Since there's no dimple to position the gas block, how would I make sure the gas block is where it needs to be?

Asked by: Fez - 6/28/2022

Q: Why mid length instead of carbine? Does the feed ramp need to be smoothed out at all for the 7.62x39mm cartridge?

Asked by: Jim - 6/9/2022

Questions about this item? Ask here.

Accepted Answer

A: These are buttoned rifling.

Answer provided by: Administrator (3/19/2024)

Accepted Answer

IF Radical is using the proper .125" bolt face and chambering you should be fine with headspacing with our bolt assembly or BCG.

Accepted Answer

Yes you can swap out the barrels. From what we can tell Radical is using a carbine length gas system and our barrel is a mid-length gas system so you would need to purchase a mid-length gas tube.

Accepted Answer

No modifications are needed in the upper. You should have no problems with the wider feedramps of the barrel extensions and standard m4 feedramps of upper receiver.

Accepted Answer

Barrel Extensions with a large wide single feed ramp with no middle lug does not support the bolt assembly properly and puts undue stress on the lugs on each side the extractor and is attributes to premature lug failures next to the extractor; therefore, we designed our 7.62x39 feed ramps that are specifically designed for 30 caliber size bullets

Accepted Answer

A: Sorry we are unable to cut the barrel down to 14.5".

Answer provided by: Administrator (9/9/2022)

Accepted Answer

Unfortunately our barrel manufacturer we had for several years passed away after a short fight with pancreatic cancer. All our barrels now are done by Shaw Barrels using our drawings/specs.

Accepted Answer

A: It's .725"

Answer provided by: Administrator (6/29/2022)

Accepted Answer

We use parallels under the flat of the gas block and upper receiver that gets your gas block top dead center (not canted to left or right) then you want a space of .035" (use a feeler gauge) between the gas block and the barrel's shoulder. You can also buy a dimpling tool but it's not needed.

Accepted Answer

We prefer mid-length in our 7.62x39 as it's cycling the action of the rifle with lower gas port pressure and you have greater dwell time before the rifles action starts unlocking.

16" 7.62x39 Mid-Length 4150 Nitrided Barrel

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16" 7.62x39 Mid-Length 4150 Nitrided Barrel

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