A2 blast shield / Optimus A2 mount

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The A2 blast shield provides concussion mitigation to A2 muzzle devices, and Griffin Armament SDQD flash comps, as well as Griffin SDQD muzzle devices which are A2 length (listed below). Compatible with the Minimalist brake shield thread protector, and also capable of converting the Optimus silencer to an 8.4" OAL 17.4 ounce, A2 mounted configuration.

The device and the collar are both compatible with the car stock wrench tool included with the Optimus silencer. Additionally a strap wrench (not included) may provide useful utility especially when removing accessory mount interfaces from the Optimus silencer.

Weighing 5.7 ounces, the Optimus A2 mount can be used on 5.56mm AR's to and with the 30SD flash comp it will support centerfire calibers up to .308 Winchester.

Minimum barrel length caliber ratings [A2 mounted Optimus silencer with taper lok baffle]:
.308 on barrels down to 16".
12.5" 6.8SPC
8" 7.62x39
8" 300BLK super or subsonic
10.5" 5.56mm

Compatible Griffin Mounts:

M4SD Tactical Comp, M4SD Flash Comp, M4SD Paladin Brake, M4SD Hammer Comp, 30SD Flash Comp, A2 compensator

Mounting Instructions

The rear slip-coupler unscrews completely from the main body of the Blast shield. The coupler is slipped over the muzzle device at a 45 degree angle, then straightened (with the threads away from the barrel) to allow the coupler to slip
into the rear accessory/BFA ring of an A2 device. The tapered end of the main body of the Blast Shield is then inserted between the coupler and the muzzle device. The coupler is then re-threaded onto the main body of the Blast Shield while still in the accessory ring.

We do not study the myriad of devices on the market. If a company wants to see if their device is compatible they can send us a blueprint of the device and a sample. Email: Tech@griffinarmament.com

Additional Details


5 Reviews

  • 4
    optimus A2 mount

    Published by Unknown on 10th Sep 2019

    works good very convenient

  • 5
    Love this A2 mount

    Published by William on 12th Apr 2019

    This attaches to most A2 Flash hiders. Easy and fast to move from AR to AR. Use with my Optimus silencer.

  • 5
    Works great!

    Published by Mike on 27th Sep 2018

    This works awesome on my kel-tec RDB and cmmg guard 9mm. If they would send it with the Optimus to start off with instead of the taper mount I would have been happier. Oh well, this saved a bunch of money by thread adapters etc. A must have for any Optimus owners.

  • 5
    Flexible design

    Published by DG on 17th Sep 2018

    Versatile for both blast mitigation and Optimus mounting compatible mounts.

  • 5
    Fucking Sick!

    Published by Mike Franklin on 31st Jul 2018

    This thing is bad ass. I bought an optimus thinking it would do almost anything. It does! But this thing was icing on the cake. I threw this on there and now its doing duty on my M&P AR. My buddies are jealous as fuck. Hell yeah merica!

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