Who uses a 3 lug mount w/ an Octane can?

[e1911]

Looking for real world feedback on which 3 lug mount works best with the 2016 scorpion and a Silencerco octane can?  Any poi shift or end cap strikes?


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[sbui]

I'm using one with the octane, TiRant, or Osprey. 

Of course the osprey does not use the 3 lug, but again no issues. 

No issues with it with the POI.

[cocowheats]

I use the HK Parts 3 lug(18x1 threads) on the original version scorpion with a Griffin Optimus in 3 lug configuration. I've ran a hundred rounds of in 124grn and 147grn and haven't had any baffle or end cap strikes or issues. POI doesn't seem off for me although I'm using a diff. can than you and I'm not shooting precision bench rest or the likes.

I like that the HK Parts utilizes the scorpion's muzzle device spring retainer...but I did have to tighten the tension on that spring a bit. Adapter is torqued on and utilizes the spring...has not even remotely loosened on me.

I'll be changing to a 1/2x28 3 lug from Griffin when I get my barrel cut down to HBi's Scorpion K specs.

[mursalot]

I think it depends on mainly on the tolerances between your suppressor mount and the barrel mount. I too went hk parts trilug for the scorpion. The tab doesn't line up with the slot when the adapter is torqued down on the barrel all the way, but that doesn't bother me since I'm using red loctite. This mated with my liberty mystic-x makes a very snug fit.

http://www.czfirearms.us/index.php?topic=74916.0

[cocowheats]

I think it depends on mainly on the tolerances between your suppressor mount and the barrel mount. I too went hk parts trilug for the scorpion. The tab doesn't line up with the slot when the adapter is torqued down on the barrel all the way, but that doesn't bother me since I'm using red loctite. This mated with my liberty mystic-x makes a very snug fit.

http://www.czfirearms.us/index.php?topic=74916.0

You can get the "tab" to rotate a bit so it does line up...I had to do this.

[mursalot]

I think it depends on mainly on the tolerances between your suppressor mount and the barrel mount. I too went hk parts trilug for the scorpion. The tab doesn't line up with the slot when the adapter is torqued down on the barrel all the way, but that doesn't bother me since I'm using red loctite. This mated with my liberty mystic-x makes a very snug fit.

http://www.czfirearms.us/index.php?topic=74916.0

You can get the "tab" to rotate a bit so it does line up...I had to do this.

I did rotate the tab, but it didn't engage the slots securely. What some people may not know is that the barrel nut has a cutout so the tab won't rotate on the barrel when securing a muzzle device. There's only 1 cutout in the barrel nut, so if you decide to rotate the tab out of the single barrel nut slot, it will ride high on the rim of the barrel nut and will be free to rotate on the barrel thus not positively securing the muzzle device. This also means that the tab is unable to bottom out on the muzzle device cutouts and is floating high barely engaging the slots

Whew, I hope that made sense. Some things just aren't that easily explained in words.

[mursalot]

I should also note there different variables at play that will have a different result for everyone. The threading from one trilug barrel mount to another may be slightly different either lining up the tab with the slot perfectly or it may be a bit off

Also, how much the barrel nut was torqued onto the barrel, how much exposed threads are available for the mount to use and the barrel thread timing itself are all variables as to whether the muzzle device will fit perfectly or be off by a couple of millimeters.

Another variable is how much the end user torques the muzzle device on the barrel. At first I used a wrench with the jaws wrapped in tape. Couldn't get it to line up even though it was soooo close. So then I picked up a strap wrench hoping to get those last couple of mm's. No go. The device makes a dead stop when it is bottomed out on the barrel nut.

A note if you have the newer version with the 1/2-28 threaded barrel. Take off the thread protector as this will prevent the trilug adapter from full seating on the barrel nut. If the thread protector is left in place, the adapter will engage the barrel at the muzzle rather than the barrel nut shoulder and not guarantee concentric fit.

[rcm192]

I thought i was getting mild endcap kisses with the 9mm cap manticore 3 lug. Bit it seems to be ok now. Maybe some carbon built up and tightened up tolerances LOL

[Bill_J]

Do you own an alignment rod?
You should.  $20 is a cheap price to pay not to have strikes.  Will let you visually see if you have any issues with alignment.
http://www.cncwarrior.com/category-s/2086.htm

[Obiwan]

Looking for real world feedback on which 3 lug mount works best with the 2016 scorpion and a Silencerco octane can?  Any poi shift or end cap strikes?

I don't have any real world feedback to share. But when I researched suppressors and mounts earlier this year, I came across a lot of posts where people had issues with Octane's and tri-lug mounts (regardless of tri-lug manufacturer). It was blamed on lose tolerances in the Octane. I think I saw posts that said that the Griffin Armament mount will fit in the Octane and provide a more rigid mating than the Octane mount. I've got a TiRant waiting for me and I chose the Manticore tri-lug adapter for it (already have the Trifecta adapter for the TiRant). But if I had chosen, or ended up with, an Octane, I would probably use direct thread instead of tri-lug. (I was originally looking for a Revolution9 but no one had them and it looked like they are no longer made, superceeded by two non-modular short and long can versions. Since my LGS had a Tirant, and it was #2 on my list, and July inched closer, I settled on that).

I'm sorry I don't have reference links anymore. But the issue was with the Octane mount, not firearms or tri-lug adapters. I'm reasonably sure I saw some posts on HK forums, but also others like ar15.com.

[mursalot]

The link referencing the suppressor mount is in the fourth post of this thread.

Also, GA scaled back production of the Revolution 9 so they could increase production of their more popular rev 45. They make them in batches so their not really available year round

http://www.silencershop.com/silencers/pistol/griffin-armament-revolution-9.html

[Obiwan]

The link referencing the suppressor mount is in the fourth post of this thread.

That's not what I'm talking about. I'm talking about the mount inside the suppressor. You either get a spring loaded booster for direct thread on moving/tilting barrels (handguns), a fixed piston/spacer for direct thread onto fixed barrels (like the Evo), or a quick attachment mount (tri-lug, taper mount, etc). From what I had read, the mount inside the Octane9 for tri-lug is a bit wobbly. Apparently the Rev9 mount will fit and work in the Octane, and the Rev9 tri-lug mount provides a tighter mounting than the Octane tri-lug mount.

I don't know if that was just a bad batch and the issue has been fixed by SilencerCo, but all the post of wobbly Octanes I've read where about the Octane mount, and people that replaced it with the Rev9 mount cured the wobbles. Or chose direct thread. What I read was enough to convince me to pass on the Octane and look for others, or if Octane was the only available for me, I would have done direct thread.

My point is that -- again, from reading posts on the Internet, not personal experience -- if baffle strikes are encountered on an Octance9 with tri-lug mount, the issue is likely not with the tri-lug adapter on the gun (Manticore or HK Parts), but with the Octane tri-lug mount itself.

[cocowheats]

I did rotate the tab, but it didn't engage the slots securely. What some people may not know is that the barrel nut has a cutout so the tab won't rotate on the barrel when securing a muzzle device. There's only 1 cutout in the barrel nut, so if you decide to rotate the tab out of the single barrel nut slot, it will ride high on the rim of the barrel nut and will be free to rotate on the barrel thus not positively securing the muzzle device. This also means that the tab is unable to bottom out on the muzzle device cutouts and is floating high barely engaging the slots

Whew, I hope that made sense. Some things just aren't that easily explained in words.

I was lucky. Mine had just enough play in the barrel's cutout that between torquing the 3 lug on and using the bit of play in the barrel slot, I was able to get the retaining spring to line up about 97-98% of the way with tabs on the 3 lug adapter...I increased the downward pressure on the retaining spring a bit to help compensate for being a smidget off. 3-lug as remained tight as hell ever since.

I understood what you said.

[copenhagen]

I've been using an octane9 with factory 3 lug on my apc9.  No baffle strikes.  Was thinking about the hk parts tri lug.

[earlan357]

HKParts 3-lug 1/2x28 adapter on a chopped 6.5" barrel with SilencerCo 3-lug mount on my Octane 45.  It does wobble a tiny bit.  No endcap strikes but I run the .45 endcap.  No changes in accuracy or poi out to 75 yards.   I really want to try a Griffin 3-lug mount but they aren't in stock anywhere.