3 Lug Interface Assembly For .40 S&W, 10mm, and .45 ACP

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DO NOT BUY A 40S&W/10mm kit for a 9mm or smaller bullet diameter application.

The 3 lug interface assembly is an integral 3 lug assembly which adds minimal length to the suppressor. This kit allows for QD mounting of many Griffin suppressors. To view applicable calibers and ratings see individual suppressor product pages. Our 3 lug adapter requires minimal deflection of the spring bushing for installation in some cases negating the need to modify hand stops and grips that come close to the 3 lug adapter. The 10mm/40S&W kit is made for Mp5 10mm or 40S&W barrels that comply with the HK dimensioned 3 lug. Additionally, this interface is designed to work with our .45ACP 3 Lug mounts available in 5/8x24, .578x28, and 16X1LH (KRISS compatible).

Note: The 10mm/40S&W kit is NOT compatible with Griffin 5.56 through 9mm 3 lug barrel adapters which are a smaller diameter. Additionally the 10mm/40S&W kit currently supports the 10mm or 40S&W H&K MP5 only and should only be used on the Revolution 45, or RESISTANCE 45 silencer as there is not enough bore clearance to shoot larger than 9mm bullets through 9mm silencers. The 9mm 3 lug assembly can be interfaced with the Optimus, Revolution 45, or Resistance 45 suppressors and fired on 9mm 3 lug host firearms.

Made of 17-4 Stainless steel and with a 17-7 wire spring, this coupler kit is heavy duty for full auto applications.

Applicable to the following Griffin suppressors:

  • 17-4 and 17-7 construction
  • minimal length added to silencer
  • Compatible with standard 3 lug adapters except for .45
  • Lifetime Warranty

Additional Details

Type Of Part:
3 Lug Interface
.40 S&W

3 Reviews

  • 5
    Does not fit B&T APC45 barrels

    Published by Stan on 15th Aug 2020

    Excellent quality for certain but does NOT fit the B&T APC45 three-lug barrel. The interior diameter of this adapter is a micro-millimeter too small. Too bad.

  • 5
    10mm 3 lug

    Published by Heath Moore on 10th Sep 2019

    If you own a MP5/10, this is a MUST HAVE!!!
    It makes perfectly with the factory HK 10mm 3 lug barrel. I now own TWO of these.

  • 5
    Three lug device that fits into your suppressor.

    Published by George S Young on 10th Dec 2018

    Mates perfectly with the Griffin 3 lug barrel extension. Made of course for the Griffin family of .45 suppressors but fits my Rugged Obsidian and my Silencerco Octane HD perfectly. Obviously the threads are cut the same. Does Not fit AAC Ti-Rant or Ti-RantM in .45 cal. Probably best on sub-guns or carbines. My two suppressors work perfectly on my Springfield 1911 A1 but not on my FNX or my Sig P227. They obviously need a LID piston device. Will try my Sig P220 in .45 and my Legion 220 in 10mm next.

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