Posted: 1/19/2016 12:11:39 PM EDT
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I know there is a topic already for the Griffin Optimus but I did not want to hijack the other poster's thread.
What can I put the optimus on right out of the box with nothing but a threaded barrel. I believe the minimalist brake is std 308 size (5/8 x 24), so that would cover me for the 300 blackout. For a 223 rifle, I'll need some adapter or a minimalist brake in the 1/2 x 28 pitch correct? What about the other adapter for pistols? It says a 1/2 x 28 piston is included. I assume that I can not use that for a 223 rifle, but I can thread it to a 1/2 x 28 pistol in 22lr . If I have a 9mm pistol and have it threaded to 1/2 x 28 will the piston work there or is the opening too small? Sorry for the many questions. This is my first time playing with supressors. I already backordered the optimus for you all at Silencer Shop and thank you for what seems to be a very easy way to get this process started for a first timer. |
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You would just need the 1//2x28 brake to attach it to your AR. There are lots of options but that is the easiest. The Griffin website indicates that the minimalist brake is included. Can you confirm that? Features Patent Pending Taper Lock end cap system 300WIN MAG Rated Full 17-4 Stainless Construction Rock Solid Mounting Taper Mount Compatible Booster Piston / Pistol Compatible 3 Lug compatible Minimalist Brake Included 1/2x28 Piston Included 9mm and 22 cal end caps included Melonite QPQ finish shim set Included Multi Caliber Friendly Lifetime Warranty Although your question seemed to be more direct than mine, my intention was the same and it seemed as though they indicated that the 1/2 x 28 brake was included. Hopefully they can clear this up cause now you got me wondering. 
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I looked on Griffin's website and found this:
1/2x28 piston, and 5/8x24 30 caliber Minimalist Brake Mount. So in your case you would probably need something for 12x28 like the brake in this thread pitch. I don't think the piston can go on a rifle. Then again I'm not certain it can directly thread on a pistol without something. That's why I asked. There are some very knowledgeable people in this forum I'm sure they will get us straight :) |
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I have no personal experience with the Optimus but have been researching it as well.
It comes with a 1/2x28 piston. This is for pistol use. A booster piston, along with its spring, allows the suppressor to recoil, while recoiling it "decouples" its mass from the end of the barrel, allowing the slide to cycle. If it wasn't for this, a barrel with a suppressor hanging off the end would weigh to much and wouldn't unlock from the slide during normal fire. Running the piston on a fixed barrel which doesn't unlock from the action will put to much force on the supressor causing it to beat itself to death. So no, do not use the piston on a rifle. You can get fixed spacers to replace the spring on some supressors, but with the optimus you should do 1 of 2 things for rifle use: Buy a direct thread adapter for fixed barrels in your pitch of choice (1/2x28 in your case, this will work great for sub guns thread 1/2x28 as well) http://www.silencershop.com/accessories/rifle-silencer-accessories/griffin-taper-mount-direct-thread-adapter.html Or, what I would recommend, Just buy 1/2x28 brake/flash hider adapters for all your rifles and enjoy the QD nature of the taper mount system.. http://www.silencershop.com/accessories/flash-hiders/griffin-armament-taper-mount.html Also, yes, the 1/2x28 piston will run on 9mm all the way down to 22lr. Different pistols may require different pistons even tho they are the same caliber (H&K for example) |
| Yes, I have been doing a lot of research as well and I'm coming to the same conclusion. It appears that the griffin website indicates that I will need a blast shield with the required minimalist taper mount device for a 10.5 5.56. I don't know if that is just for reducing the concussion or if it is necessary for proper operation of the can. I have emailed them for a definitive answer, but have not received a response. looks like I'll be spending a couple hundred extra bucks to make it work. It would really be annoying if that wasn't necessary. |
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It comes with the 5/8x24 minimalist brake for 30 cal rifles. It also comes with the 1/2x28 piston for use on 9mm handguns.
If you want to run it on a 556 you would need either the 1/2x28 brake or direct thread mount. For your fixed barrel 9mm or 22 then you would need the fixed barrel spacer. Of course there are a hundred ways to configure it but these would be the most straight forward for your application. |
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Yes, I have been doing a lot of research as well and I'm coming to the same conclusion. It appears that the griffin website indicates that I will need a blast shield with the required minimalist taper mount device for a 10.5 5.56. I don't know if that is just for reducing the concussion or if it is necessary for proper operation of the can. I have emailed them for a definitive answer, but have not received a response. looks like I'll be spending a couple hundred extra bucks to make it work. It would really be annoying if that wasn't necessary. You can use the minimalist taper mount on the included full size rifle extension or the optional minimalist blast shield. |
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You can use the minimalist taper mount on the included full size rifle extension or the optional minimalist blast shield. Quoted:
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Yes, I have been doing a lot of research as well and I'm coming to the same conclusion. It appears that the griffin website indicates that I will need a blast shield with the required minimalist taper mount device for a 10.5 5.56. I don't know if that is just for reducing the concussion or if it is necessary for proper operation of the can. I have emailed them for a definitive answer, but have not received a response. looks like I'll be spending a couple hundred extra bucks to make it work. It would really be annoying if that wasn't necessary. You can use the minimalist taper mount on the included full size rifle extension or the optional minimalist blast shield. So now I have just added 9.5" to my barrel. 
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Or you can use the mid length version it will work for a 10.5" 556 barrel. Yes, according to their website, that's correct. However, it also says it requires the minimalist blast shield with the mid length configuration or without the blast shield I could supposedly configure it as full sized. ( Mid size (Taper Mount Minimalist devices only): 7.9" 15 .7 ounces Requires separate minimalist blast shield coming soon 308 Win 16" 6.8spc 12.5" 7.62x39 8" 300blk Super/Sub 8" 10.5" 5.56mm |
