Description
These 3 Lug adapters are HK pattern and will work with any 3 lug silencer on the market made to this standard. They will also work with Griffin 3 lug interface assemblies
The 5/8×24 and 13.5x1mm LH versions have a cylindrical machined extension added to the mount. The 13.5mm version has flats for a wrench on that cylinder extension and has the O-ring interface typical of 13.5×1 LH mounts. The other 3 Lugs are the smaller version pictured.
The 5/8×24 is meant to provide a 3 Lug mount to 30 caliber barrels but is also compatible to 9mm barrels where that thread is uncommonly used. Most 30 caliber barrels are threaded 5/8×24 thread pitch.
1/2×28 Thread Total Length: 1.4375″. Based off of industry standard .625″ barrel threads, added length should be ~.8125″.
5/8×24 Thread Total Length: 2.125″. Based off of industry standard .625″ barrel threads, added length should be ~1.5″.
Made from 17-4ph stainless and Melonite QPQ treated.
Michael McManus –
I purchased two of these because my favorite mount is the H&K 3 lug system and the thought of not having to change the mount and using it with my cans with 300BLK subs appealed to me. The shipping was very fast and the quality was excellent. I installed them on both of my 300BLK uppers, one 8.5″ barrel and one 7.5″. The only problem I had was on the 8.5″ barreled upper is about 33% to 50% of the time, depending on the ammo (Remington 220 and American Eagle 220) the rounds would go supersonic. They were obviously loaded just subsonic and the higher pressure of the little bit longer barrel in combination with the way the mount makes the blast chamber just a little smaller was enough to push the bullet supersonic. (free bore effect) None of that is a flaw of the adapter nor Griffin’s fault. It didn’t happen with the direct thread mount or with the 7.5″ barrel. I am going to just put a minimalist taper mount on my 8.5″ barrel so I can run supers with it too with my 30 cal can.
harperwc –
it is oh so nice to come across a company like griffin armament. high quality stuff with folks that really have a great helpful attitude. thank you.
Ryan –
The 1/2×36 3-lug adapter is machined with excellent quality and finish. It is not just limited to this adapter, I own about 15 various Griffin products and all of them are very high-end. Really pleased time and again. They will be a continued go-to source for many of my needs.
Albert Ruggles –
Derek –
Use these tri lugs on all my pistol carbines
Kyle –
Griffin has done it again. They take amazing products and make them better. The fit and finish is top notch. This makes switching cans from pcc’s to fixed barrel pistols effortless. I can switch from my 9mm AR, to Ruger pcc, to 15-22, to a 22 pistol in no time. More time shooting and less time fooling with cans. Buy one for each host you wont regret it.
Mike cerino –
Simple and solid attachment. Fits snug with three lug interface. Very easy connect/disconnect
Cody White –
Solid fit, and easy to install. Makes switching from firearm to firearm quick and easy.
Eric H –
Awesome product! Great quality workmanship and I would recommend this 3 Lug Adapter if you have a Sig MPX.
Ted –
Everything GA makes is quality. I used one of these to convert a direct thread setup to 3 lug and I wish I had done it sooner. Highly recommended!
Art –
It works as advertised. Machining and finish are very nice. The price is seriously inflated and Griffin knows that. It’s too bad with the money you spend on this stuff they can’t make all the extras a little more reasonable
Z. White –
Fitment on my MPXK was great! My Rugged Obsidian suppressor with 3 lug adapter goes on and off with ease. Wish they would put some kind of channels In the adapter to resemble the original bird cage.
CT Anderson –
Fits on my 9MM AR perfectly. Mates up to my Optimus 9 and makes for quick and easy installation and removal. This and the 3 Lug Interface for a suppressor are a necessity.
Rodney –
A good fit, patiently waiting for 1/2-28
Charlie Ross –
The hands down best customer service I have ever had.
Michael –
Well made. Sometimes I have problems putting on and removing the suppressor. Maybe it will be easier after it gets broke in. I hope.
Paul Murdock –
This will keep my suppressor from loosening so very happy!
JimK_TX –
Bought these to use with my 9mm devices and my Bushwhacker 46, but low and behold they also work with my Gemtech GM9. Bought the Gemtech quick detach adapter MP5 style. Works great.
Austin –
As described, fits perfectly on my 5.5in modern Ballistic Advantage barrel however have yet to try it out with a tri-lug suppressor.
Robert –
Great fit and easily allows my gemtech lunar 9 slide on and off..
Ryan f. –
Real nice piece. High quality materials and makes switching my rev .45 can from gun to gun really quick.
Smith Guns –
As my Tool & Die instructor used to say, ” As perfect as perfect can be”. Machine quality first and foremost!!!@
Gdot –
Top quality machining, perfect fit on an MPX. The precision craftsmanship is evident by the tight tolerances of the whole Griffin 3-lug system.
Chase –
I got this for my MPX and it fit perfectly.
Jacob Pedigo –
High quality and great fit on my Aero AR 9. Can transition my silencerco hybrid 46 from my mp5 3 lug adapter with no issue. Highly recommend if you in the market for an adapter.
alexey stebunov –
I was impressed.Superb quality and attention to detail.Fit my MPX like a glove.Thank you
John Weiss III –
Well. it’s official. My SIG MPX now has some of the coolness of an MP5 thanks to this 3 lug mount. Even with that weird 13.5mm left hand thread, this mount went right on, and the included o-ring was a nice touch, but Griffin Armament is run by shooters who engineer, and it shows in their quality and ease of use. Mine is securing an older AAC Ti-rant 45 thanks to an adapter. But of course you could just get a Griffin can, and avoid the guess work
Gary Carr –
needs no changes
Denis A Crowns –
This adapter works as advertised. I use it with the Griffin Armament Rev-9 suppresser on my 300 blackout pistols with 10.5 and shorter barrels. Fairly priced, fast shipping If you need it, buy it.
Anonymous –
I own 4 of these. Each one is excellent
C.Fain –
I bought to mount on two of my PCC’s to use with my Rex MG7 suppressor, I am very happy with how they easily they mounted and how they lock up tight with the suppressor.
Kirk –
This item was amazing quality and works perfectly.
Craig –
Excellent quality product from Griffin! Machining and finish on these lugs is top notch.
Anonymous –
fit perfect on my mpx k can’t wait till my Bushwacker gets out of jail
John –
Product works as advertised.