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Moderator Flash Hiders - CAR-15 / XM177E1 / XM177E2 / Colt Commando (1963-1974)

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$59.00 - $84.00

We offer 5 different versions of the CAR-15 "Moderator" muzzle device. The first three choices are authentic to the originals, and the last one is a hybrid smaller size version.


  • Gen 1 - 3.5 inch, no slots.. used on the Survival Rifle and first model CAR-15 shorty (colt model 607)
  • Gen 2 Light Weight - 4.3 inch, hollowed out inside to reduce weight (6 oz.)
  • Gen 2 Standard - 4.3 inch, real size & weight (10 oz.) of original..  the most authentic Gen 2 Moderator reproduction available today
  • Hybrid - 3.5 in length, basically a reduced size/weight moderator that can be used a variety of ways (4 oz)
  • Gen 2 - 4.3" - Ultra light Weight- Aluminum

*All except the Ultra Light Weight Moderator are made of steel and manufactured in the USA.

*** These are all one solid piece, meaning they do not come with any beveling or any internal parts to be removed.



Moderator History:

1. In the early 1960's Colt started testing a small 10" submachine gun version of the CAR-15 family.  They first tried the flash hider (FH) they had - the "Duck Bill" 3 prong, and then later the second generation of this 3 Prong when available. Neither were satisfactory in taming the blast/sound to their liking.

2. The first lengthened muzzle device tried was the 3.5" long Moderator and had no flash slots.

3. About 1966 the final version, 4.3 inch, was being issued on XM177's; and then in early 1967 this model continued to be used on the XM177E2 (now also with the Grenade Ring). Colt stopped making Moderators in the Mid-1970's due to ATF ruling it a Sound "Suppressor".

4. Though not historically correct, we also offer a special 3.5 inch with Flash Slots. This is the smallest/lightest Moderator style muzzle device available. Good for applications where you would like the style, but want less size & weight up front.

11.5 inch barrel versions (XM177E2 / GAU-5) use a Grenade Ring in conjunction with the Moderator (Here)


 For the washer (Here). Recommend using a lock washer.


For install some of these will not have wrench flats (particularity the hybrid). We recommend 2 ways of installing. 1, Strap wrench; 2, place a screw driver through the holes and turn (suggest a soft coating to prevent scratches).

  • 5
    Flash moderator

    Posted by William Bullen on 27th Feb 2021

    Mail service and communication could improve but the product is top notch. I’m very pleased with the flash moderator. Thank you for your business.

  • 4
    CAR-15 on an AR

    Posted by Aaron on 11th Feb 2021

    I was always smitten by the muzzle device on Vietnam era CAR-15s, and now I can replicate the look thanks to retro rifles. Yeah, my pistol build is way more modern, but this gives it that touch of nostalgia that is missing in so many AR builds. This thing is heavy, that is the down side.

  • 5
    Nicely made just what I remembered looks great

    Posted by Stephen on 27th Jan 2021

    Do yourself a favor and get a crush washer and some shims to set the timing

  • 4
    3.5inch moderator

    Posted by David on 22nd Dec 2020

    I would have gave a 5 star but the crush washer was not sent with the moderator like advertised. Over all very nice workmanship.

  • 5

    Posted by Jake on 3rd May 2020

    Coating is excellent and fits like a glove. Great modern take on old-school cool.

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