 beve
Member
Team Member
Joined: Sep 2011  FL, USA
 Posts: 328 Feedback: 100% (1) |
Posted: 8/8/2012 10:20:13 AM
THE IMAGE ABOVE IS A PAID ADVERTISEMENT 
Does anyone know if this upper can be cut down to 10.5" or 10.3" and function reliably with subsonics and supersonics? Thanks. |
|
|
|
QuietRiot11
Member
Team Member
Joined: Oct 2011 NC, USA
Posts: 231 Feedback: 0% (0) Link To This Post |
Posted: 8/8/2012 12:00:16 PM
Originally Posted By beve:
I am thinking about building my mk18 clone as a 300 blackout gun. Spikes makes a 16" upper with a carbine length gas system and fsb http://www.spikestactical.com/new/z/images/prodimg/STU3025-M4S.jpg Does anyone know if this upper can be cut down to 10.5" or 10.3" and function reliably with subsonics and supersonics? Thanks. It will not. You need pistol gas for anything shorter than 16", and some manufacturers are now just doing pistol gas for 16" as well. |
|
|
|
Posted: 8/8/2012 12:03:08 PM
No it can't. You need a pistol length gas system on anything shorter than 16". I would reccomend you look at simply buying whatever barrel length you want. Even getting a good deal on a 16" will be about the same expense after you have the barrel chopped and threaded, especially if you have to move the gas block to make it reliable.
|
|
|
|
|
Posted: 8/8/2012 12:09:37 PM
Originally Posted By abinok:
No it can't. You need a pistol length gas system on anything shorter than 16". I would reccomend you look at simply buying whatever barrel length you want. Even getting a good deal on a 16" will be about the same expense after you have the barrel chopped and threaded, especially if you have to move the gas block to make it reliable. I haven't seen an other 300 blackout barrels with a fsp on it. Also, I have already bought all the parts for a mk18 clone including a KAC RAS and I have no idea how I would get it to work on a pistol length system. If it's not possible right now that's fine. I will use Black Hills 77 gr OTM and get a stand alone 300 blk out upper one day. |
|
|
|
|
Posted: 8/8/2012 11:21:55 PM
There's several out there with a fsp. Dsa is shipping some now. I saw a loki last week with one on a 16" 300blk.
|
|
|
|
|
Posted: 8/9/2012 12:27:38 AM
[Last Edit: 8/9/2012 12:28:21 AM by Banshee35]
I am doing that exact same build with a 10.5" barrel as that's what Grim Reaper Tactical does.
Mine is a 10.5" with a pistol length gas system with a YHM low-pro gas block and then a FSB pinned on at the carbine position. I also had him thread it 1/2X36 to use my Gemtech multimount on it without having to buy another endcap and 9mm A2 flash hiders are cheap and easy to find. Sorry no pics yet as it should be here this week but $300 for the barrel and I supplied the gasblock (he has them in stock too) which he dimpled for and he provided the rest of the barrel parts. |
|
|
|
|
Posted: 8/9/2012 12:33:12 AM
Originally Posted By Banshee35:
I am doing that exact same build with a 10.5" barrel as that's what Grim Reaper Tactical does. Mine is a 10.5" with a pistol length gas system with a YHM low-pro gas block and then a FSB pinned on at the carbine position. I also had him thread it 1/2X36 to use my Gemtech multimount on it without having to buy another endcap and 9mm A2 flash hiders are cheap and easy to find. Sorry no pics yet as it should be here this week but $300 for the barrel and I supplied the gasblock (he has them in stock too) which he dimpled for and he provided the rest of the barrel parts. That sounds perfect. Thanks for the help! |
|
|
|
|
Posted: 8/9/2012 2:27:34 AM
[Last Edit: 8/9/2012 2:28:32 AM by Banshee35]
No problem...tell him Eric sent ya
He does all his profiling on a CNC machine and had to re-write the program for my build so he should still have it on hand for another. On a side note, he's a machinist for the Air Force so his stuff should be pretty good and never heard anything bad about them. He can do it as a complete upper for you as well if you don't already have any of your parts. |
|
|
|
|
Posted: 8/9/2012 9:45:37 AM
+1 for Zach. Good guy good barrels. Love my 8".
|
|
|
|
|
Posted: 8/9/2012 10:33:45 AM
12" works fine with a carbine gas system and a .120 port
|
|
|
|
|
Posted: 8/9/2012 11:08:38 AM
Originally Posted By DSArms_FAL:
12" works fine with a carbine gas system and a .120 port But not for a Mk18 build |
|
|
|
QuietRiot11
Member
Team Member
Joined: Oct 2011 NC, USA
Posts: 232 Feedback: 0% (0) Link To This Post |
Posted: 8/9/2012 4:02:12 PM
Originally Posted By DSArms_FAL:
12" works fine with a carbine gas system and a .120 port That's interesting. Noveske has found that even 16" barrels work better with pistol gas. Are you able to run suppressed supersonics and unsuppressed subsonics reliably with that setup? |
|
|
|
Posted: 8/10/2012 3:08:48 PM
Yes it can.. you need to weld plug the carbine position gas port then re-drill a pistol hole.. and of course re-thread the muzzle.
|
|
|
ARCHIVED
