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View Full Version : 13.7 "Do All" SBR



msnyder0609
12-15-18, 11:48
I've had this rifle in its current configuration for about 8 months now. I don't think it'll be changing anytime soon, so I thought I'd do a write up on it.

I wanted a that would cover pretty much all my bases. Short enough to be nimble. Long enough to make hits at 600+. IR laser/illuminator for use with nods.

Barrel is a true 13.75 from Triarc Systems. Mid-length. I'm running an A5 buffer (h3) along with an LMT enhanced carrier. I have thousands of rounds through this gun and haven't had a single hiccup, so I'm very confident in its reliability at this point. This combo also makes for an extremely soft shooting gun, especially with the small gasport on the Triarc barrel. I believe its .073.

Other upper parts. I have a BCM upper receiver and a Geissele Mk14 rail. Optic is a Razor 1-6 "E" in a Geissele 1.93 mount. I prefer the more "heads up" shooting position I get from the taller mount. Running an Atpial-C for IR and a Surefire M600u off a Surefire dual switch.

Lower, pretty standard stuff here. Spikes SBR'd lower receiver. Vltor A5H3 and an SSA-E. BCM & Magpul furniture.

In regards to accuracy. It's 2-3 moa with Wolf Gold or my economy handloads and me as a shooter. I've never tried anything but 55gr blasting ammo so I can't say much more in that regard. I have made hits on C zone steel at 700 with a good spotter. I'm sure with match grade ammo it'd be an MOA gun.

Only thing I'm waiting on is a Sandman K. Hopefully that stamp will be approved within a month. Currently I run my Specwar 556k on it from time to time.

Hope ya'll dig it!

https://imagizer.imageshack.com/v2/1024x768q90/923/MmnCgW.jpg
https://imagizer.imageshack.com/v2/1024x768q90/921/qx79um.jpg
https://imagizer.imageshack.com/v2/1024x768q90/923/gyADWM.jpg
https://imagizer.imageshack.com/v2/1024x768q90/924/O0nayj.jpg

Jwknutson17
12-15-18, 13:11
Sweet rig. Good work!

Furbyballer
12-15-18, 16:39
Good looking rig man. I've been wanting to hear feedback on that barrel for awhile. My only question is why didnt you pin it with a dead air nox or flash hider ect... and just forgo the sbr lower?

Sent from my SM-G950U using Tapatalk

artoter
12-15-18, 18:49
What an awesome rifle! ;)

msnyder0609
12-15-18, 19:41
Good looking rig man. I've been wanting to hear feedback on that barrel for awhile. My only question is why didnt you pin it with a dead air nox or flash hider ect... and just forgo the sbr lower?

Sent from my SM-G950U using Tapatalk

I actually had a Dead Air flash hider pinned on it originally. I removed that when the NOX came out. I sold the 10.3 upper that was on my SBR lower, so I moved this 13.7 to said lower. I wanted to be able to suppress it with the can I have while I wait on the Sandman K, so I took the NOX off and put a standard ASR flash hider on and left it unpinned.

I haven't bothered re-pinning the NOX because I'm kind of on the fence about it. It drives the muzzle down a bit too much IMO and is obnoxiously loud. I prefer flash hiders over comps or brakes.

irondude
12-23-18, 20:48
Awesome looking rifle.

ViniVidivici
12-24-18, 14:46
Beautiful. Only thing I could possibly add to that setup would be some kind of BUIS set. Very nice.

msnyder0609
12-25-18, 07:50
Beautiful. Only thing I could possibly add to that setup would be some kind of BUIS set. Very nice.

Thank you! I thought about adding an offset RMR, but I don't think its really necessary. I have two methods of aiming, one being an arguable tank of an optic.

thehun
12-27-18, 09:34
Great build. I run similar...but with a LMT MWS .308 with a 13.7 pinned barrel.

nate89
12-27-18, 16:13
Awesome rifle! I say that because I have almost an identical gun, and it is far and away my favorite to shoot. Geissele Mk14 with a 13.7 and sandman flash hider, Vltor A5 with A5H3 buffer and Law folder, Trijicon 1-4 accupoint in a larue 1.93 mount, and surefire m600 is what I have, and it's a stellar 'do-all' rifle.

Regarding the Sandman-K, I have one that basically lives on this gun. I think the K is one of the best options for a 12.5-16" barrel. I added the flash hiding endcap because there was significant muzzle flash visible through the optic. The endcap does tame it quite a bit, and was well worth the money.

I'm glad to see others using a similar set-up, and I'm honestly looking to build a second one as a back-up because I do so much with this one rifle. Best of luck on the stamp wait on the Sandman-K, I'm confident you will really like what it does.

msnyder0609
01-06-19, 06:58
Awesome rifle! I say that because I have almost an identical gun, and it is far and away my favorite to shoot. Geissele Mk14 with a 13.7 and sandman flash hider, Vltor A5 with A5H3 buffer and Law folder, Trijicon 1-4 accupoint in a larue 1.93 mount, and surefire m600 is what I have, and it's a stellar 'do-all' rifle.

Regarding the Sandman-K, I have one that basically lives on this gun. I think the K is one of the best options for a 12.5-16" barrel. I added the flash hiding endcap because there was significant muzzle flash visible through the optic. The endcap does tame it quite a bit, and was well worth the money.

I'm glad to see others using a similar set-up, and I'm honestly looking to build a second one as a back-up because I do so much with this one rifle. Best of luck on the stamp wait on the Sandman-K, I'm confident you will really like what it does.

Awesome! Post a pic here, I'd like to see your rifle. ...And ya, I'm impatiently waiting on that stamp. 6 months in and now the govt is shut down. Im sure im in for another 3 months. #repealthenfa (pipe dream, i know).

nate89
01-07-19, 16:49
Here are a few pictures before I got the light on it. I let a buddy shoot it and he's in the process of building pretty much the same upper. I just bought him the same BA 13.7 barrel here on the EE, and we'll be putting it together in a couple weeks. He'll be using a pistol lower with the SBA3 brace for now, but plans on the SOLGW NOX for a pin and weld.https://uploads.tapatalk-cdn.com/20190107/b566926ccd4e02d521ececed4205540e.jpghttps://uploads.tapatalk-cdn.com/20190107/4e6671818532232a49d1b99d66db791d.jpghttps://uploads.tapatalk-cdn.com/20190107/8644498478276a76d410546a8bbeeb57.jpg

Sent from my BND-L24 using Tapatalk

Wake27
01-07-19, 16:52
How are the Triarc barrels in that length with G rails? I was very tempted to try one with my MK16 but was worried it'd feel like a tank.

msnyder0609
01-07-19, 18:02
How are the Triarc barrels in that length with G rails? I was very tempted to try one with my MK16 but was worried it'd feel like a tank.

Why would it feel like a tank? You’d be pairing a Medium contour barrel with a light rail?

Now when it does feel “tankish” is when you have a razor, peq, and a can on the end. lol.

Wake27
01-07-19, 18:28
Why would it feel like a tank? You’d be pairing a Medium contour barrel with a light rail?

Now when it does feel “tankish” is when you have a razor, peq, and a can on the end. lol.

I'd heard different things about how heavy the barrels were, and at that time there seemed to be some discrepancies with the site's weight listings. Plus my two primary hand guards before the MK16 were both a few ounces lighter and paired with LW barrels. In the end, I put a BCM ELW on it, but I do want one of their barrels for a pistol/SBR.

msnyder0609
01-07-19, 19:10
Here are a few pictures before I got the light on it. I let a buddy shoot it and he's in the process of building pretty much the same upper. I just bought him the same BA 13.7 barrel here on the EE, and we'll be putting it together in a couple weeks.



Love it! ...Cant wait to get my Sandman K...Unfortunately im at 6 months, and now the govt is shutdown. I bet I have another 3 months or so to go. Also, the NOX is cool. I ran it for a while before switching back to an ASR mount for my other can. It's a little too aggressive as a comp IMO, as I feel it drives the muzzle down a bit too much, but overall a pretty effective MD.

msnyder0609
01-07-19, 19:11
I'd heard different things about how heavy the barrels were, and at that time there seemed to be some discrepancies with the site's weight listings. Plus my two primary hand guards before the MK16 were both a few ounces lighter and paired with LW barrels. In the end, I put a BCM ELW on it, but I do want one of their barrels for a pistol/SBR.

Right on! ...I'd love to try out the 12.5 midlength from Triarc. I think that'd be a hell of a smooth shooter.

Wake27
01-07-19, 19:31
Right on! ...I'd love to try out the 12.5 midlength from Triarc. I think that'd be a hell of a smooth shooter.

That'd be my first choice, I just wish there were more rails for that length. I really want to put BCM's QRF on a shorty upper for some reason.

RobertTheTexan
01-11-19, 18:52
....Very nicely done man! Some serious quality into that bad boy!



Great build. I run similar...but with a LMT MWS .308 with a 13.7 pinned barrel.

Shot you a PM, looking for some input on how your 13.7 is running.

zombie killer
05-07-19, 13:28
Love the 13.7”! I keep building other uppers but I go back to this one!

https://uploads.tapatalk-cdn.com/20190507/1bcf92d728447a960770deb26461f28c.jpg


Sent from my iPhone using Tapatalk

ginzomatic
05-09-19, 07:15
That's a great set up. I've been wanting to build a 13.7 with a Noveske barrel for a long time now. Will probably be my next build

1168
05-09-19, 07:37
Cool rifle; thanks for sharing. I really dig 13.7” barrels. Kind of an SBR sweet spot, since you can run a reasonable handguard with them, get good ballistics without a nuclear fireball, yet they are very maneuverable.

bigjoe7757
06-04-19, 12:42
I've had this rifle in its current configuration for about 8 months now. I don't think it'll be changing anytime soon, so I thought I'd do a write up on it.

I wanted a that would cover pretty much all my bases. Short enough to be nimble. Long enough to make hits at 600+. IR laser/illuminator for use with nods.

Barrel is a true 13.75 from Triarc Systems. Mid-length. I'm running an A5 buffer (h3) along with an LMT enhanced carrier. I have thousands of rounds through this gun and haven't had a single hiccup, so I'm very confident in its reliability at this point. This combo also makes for an extremely soft shooting gun, especially with the small gasport on the Triarc barrel. I believe its .073.

Other upper parts. I have a BCM upper receiver and a Geissele Mk14 rail. Optic is a Razor 1-6 "E" in a Geissele 1.93 mount. I prefer the more "heads up" shooting position I get from the taller mount. Running an Atpial-C for IR and a Surefire M600u off a Surefire dual switch.

Lower, pretty standard stuff here. Spikes SBR'd lower receiver. Vltor A5H3 and an SSA-E. BCM & Magpul furniture.

In regards to accuracy. It's 2-3 moa with Wolf Gold or my economy handloads and me as a shooter. I've never tried anything but 55gr blasting ammo so I can't say much more in that regard. I have made hits on C zone steel at 700 with a good spotter. I'm sure with match grade ammo it'd be an MOA gun.

Only thing I'm waiting on is a Sandman K. Hopefully that stamp will be approved within a month. Currently I run my Specwar 556k on it from time to time.

Hope ya'll dig it!

https://imagizer.imageshack.com/v2/1024x768q90/923/MmnCgW.jpg
https://imagizer.imageshack.com/v2/1024x768q90/921/qx79um.jpg
https://imagizer.imageshack.com/v2/1024x768q90/923/gyADWM.jpg
https://imagizer.imageshack.com/v2/1024x768q90/924/O0nayj.jpg

Looks great, love the paint.

ssimo
09-17-19, 11:27
Nice rifle!

mike175gr
04-07-20, 21:01
That's a great set up. I've been wanting to build a 13.7 with a Noveske barrel for a long time now. Will probably be my next build

I just finished one with a Noveske Infidel 13.7 barrel. I used a BCM upper, Hodge BCG, 13" Geissele MK14 rail and pinned and welded BE Meyers 249F. I am using a Vltor A5 buffer system, Larue MBT trigger, Knight BUIS, and saving for a Razor HD 1-6 or maybe the 1-10x.... I have still not shot it yet, but it is probably my best and highest quality build.