meh
Greenhorn
Posts: 2 
|
Post by meh on Nov 4, 2013 15:14:15 GMT -8
Greetings All, this is my first post so please be kind.
I am building my first AR-308 and have ordered a BHW 20" bull barrel. I would like to use an adjustable gas block to be able to fine tune the system. I would also like a handguard that completely covers the GB. Does anyone know of a GB / HG combo that will fit my needs? What length HG do I need to cover the gas block? I can't seem to find anything on the BHW website that gives lengths from receiver to GB shoulder to determine HG length.
Thanks in advance for the help.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Nov 4, 2013 16:02:51 GMT -8
Greetings All, this is my first post so please be kind. I am building my first AR-308 and have ordered a BHW 20" bull barrel. I would like to use an adjustable gas block to be able to fine tune the system. I would also like a handguard that completely covers the GB. Does anyone know of a GB / HG combo that will fit my needs? What length HG do I need to cover the gas block? I can't seem to find anything on the BHW website that gives lengths from receiver to GB shoulder to determine HG length. Thanks in advance for the help. I am not sure what length gas system you ordered. If you would like to cover the gas block order a midlength gas and use a standard rifle length hand guard. As for the gas block, I would call BTE. bte-usa.com/ Ask to speak with George. He makes an adjustable .936 block that will fit under the hand your guard. |
|
djmfl
Senior Member
Posts: 118
|
Post by djmfl on Nov 4, 2013 18:53:46 GMT -8
George is a really good guy. I have his .936 adjustable gas block on my Black Hole 264LBC barrel. He didn't have a low profile adjustable at the time but he personally machined of the rail for me and it looks and functions great. I liked it so much that I just finished tuning my standard profile barrel with one. You'll love it!
|
|
meh
Greenhorn
Posts: 2
|
Post by meh on Nov 5, 2013 7:24:49 GMT -8
The 20" Bull uses a rifle length gas system. I was just wondering what the length is from receiver to the gas block shoulder. I can use that length and add it to the length of the gas block to determine the minimum length of a handguard to cover the gas block. I have seen handguards from 12", 12.5", 13", 13.5", 14", 14.5".....
|
|
|
|
Post by GLSHOOTER on Nov 5, 2013 12:20:03 GMT -8
The 20" Bull uses a rifle length gas system. I was just wondering what the length is from receiver to the gas block shoulder. I can use that length and add it to the length of the gas block to determine the minimum length of a handguard to cover the gas block. I have seen handguards from 12", 12.5", 13", 13.5", 14", 14.5"..... On mine with a BTE 936 from receiver to the shoulder of the GB is a bit over 12.5 nches. Most rifle lenght tubes are right at 12.5". I just built three rifle lenght with covered mini-gas blocks using 15" tubes. For a mid lenght it is about 9.25" BTW. Greg |
|
|
|
Post by sleepy28 on Nov 27, 2013 17:52:50 GMT -8
It might be to late but Troy makes a 13.8 inch hand guard for the lr308 it covers the gas block on a rifle length gas tube. I have one they are great.
|
|
|
|
Post by lkrbuilder13 on Dec 31, 2013 14:14:45 GMT -8
The 20" Bull uses a rifle length gas system. I was just wondering what the length is from receiver to the gas block shoulder. I can use that length and add it to the length of the gas block to determine the minimum length of a handguard to cover the gas block. I have seen handguards from 12", 12.5", 13", 13.5", 14", 14.5"..... On mine with a BTE 936 from receiver to the shoulder of the GB is a bit over 12.5 nches. Most rifle lenght tubes are right at 12.5". I just built three rifle lenght with covered mini-gas blocks using 15" tubes. For a mid lenght it is about 9.25" BTW. Greg On the AR 10 does the barrel nut differ from that of an ar15 using the "dpms" platform. I haven't started buying stuff but thinking about this for my next build |
|
|
|
Post by GLSHOOTER on Dec 31, 2013 17:23:50 GMT -8
On mine with a BTE 936 from receiver to the shoulder of the GB is a bit over 12.5 nches. Most rifle lenght tubes are right at 12.5". I just built three rifle lenght with covered mini-gas blocks using 15" tubes. For a mid lenght it is about 9.25" BTW. Greg On the AR 10 does the barrel nut differ from that of an ar15 using the "dpms" platform. I haven't started buying stuff but thinking about this for my next build Ritch will have to take that one. I don't have an AR10 yet.... Greg |
|
|
|
Post by Brandon Sneed on Jan 1, 2014 3:53:04 GMT -8
On mine with a BTE 936 from receiver to the shoulder of the GB is a bit over 12.5 nches. Most rifle lenght tubes are right at 12.5". I just built three rifle lenght with covered mini-gas blocks using 15" tubes. For a mid lenght it is about 9.25" BTW. Greg On the AR 10 does the barrel nut differ from that of an ar15 using the "dpms" platform. I haven't started buying stuff but thinking about this for my next build There are two types of barrel nuts for the 308 platform: AR10 is Armalite and LR308/Sr25 is a DPMS barrel nut. If your receiver (upper) is a DPMS or sR25 pattern then use the DPMS nut. These two both are bigger than the standard nut for an ar15. Some handguards also come with their own nut so be mindful of that as well before making the purchase (eg Troy MRF 308, is a dpms pattern but included with the rail) |
|
|
|
Post by lkrbuilder13 on Jan 1, 2014 4:27:31 GMT -8
On the AR 10 does the barrel nut differ from that of an ar15 using the "dpms" platform. I haven't started buying stuff but thinking about this for my next build There are two types of barrel nuts for the 308 platform: AR10 is Armalite and LR308/Sr25 is a DPMS barrel nut. If your receiver (upper) is a DPMS or sR25 pattern then use the DPMS nut. These two both are bigger than the standard nut for an ar15. Some handguards also come with their own nut so be mindful of that as well before making the purchase (eg Troy MRF 308, is a dpms pattern but included with the rail) Thank you, that helps alot. I wish that everything was standard on this platform like the 15. Is there an advantage of one platform over another? I know armalite uses a different mag, but other than that I don't know the difference. Thank you Brian |
|
|
|
Post by Brandon Sneed on Jan 1, 2014 19:12:05 GMT -8
Thank you, that helps alot. I wish that everything was standard on this platform like the 15. Is there an advantage of one platform over another? I know armalite uses a different mag, but other than that I don't know the difference. Thank you Brian Armalite is a bit more expensive when buying individual parts. We've had success with the dpms pattern to the point of getting the variance for our lowers using the dpms pattern lowers. Other than that there's no real advantage: there's appearing to be more outsource for parts for the DPMS style system. |
|
|
|
Post by lkrbuilder13 on Jan 1, 2014 19:18:10 GMT -8
Thank you, that helps alot. I wish that everything was standard on this platform like the 15. Is there an advantage of one platform over another? I know armalite uses a different mag, but other than that I don't know the difference. Thank you Brian Armalite is a bit more expensive when buying individual parts. We've had success with the dpms pattern to the point of getting the variance for our lowers using the dpms pattern lowers. Other than that there's no real advantage: there's appearing to be more outsource for parts for the DPMS style system. Do you make lowers? Like I said I am looking for parts and the guy that I have been buying my 15 lowers from still hasn't got the 308 stuff worked out yet. |
|
|
|
Post by Brandon Sneed on Jan 2, 2014 7:47:10 GMT -8
Armalite is a bit more expensive when buying individual parts. We've had success with the dpms pattern to the point of getting the variance for our lowers using the dpms pattern lowers. Other than that there's no real advantage: there's appearing to be more outsource for parts for the DPMS style system. Do you make lowers? Like I said I am looking for parts and the guy that I have been buying my 15 lowers from still hasn't got the 308 stuff worked out yet. We are awaiting variance approval to machine them. We have been utilizing SI Defense and Quentin Defense for the host lowers and marking accordingly to be in compliance with ATF. |
|
