SIG Sauer Academy

NRAAM 18 – GGP S-Heavy & Light Mk II

Grey Ghost Precision has introduced the new Mk II versions of the S-Heavy and S-Light. Aside from bringing the manufacturing in-house, they’ve also introduced a more open architecture, allowing use of commercial parts. The orgiginal version of the rifle used a proprietary upper, lower and rail which only worked with one another. Now the upper and lower are DPMS style for the Heavy and Standard AR for the Light. Additionally, users aren’t stuck with just one rail system now.


S-Heavy Feature:
GGP MKII 7075-T651 billet upper receiver
GGP MKII 7075-T651 billet ambi lower receiver
GGP MKII Extended length (15″) M-LOK hand guard
True Black Type III Mil Spec hard coat anodize
16″ .308WIN match grade BBL. 1×10 twist, 5/8-24 threaded muzzle with GGP muzzle brake, Black Nitride coating in and out, Mid Length gas.
Superlative Arms Adjustable Gas Block
Bolt Carrier Group is Black Nitrided and MPI tested
Carbine .308 buffer set
CMC Flat-Faced Single Stage trigger, 3 1/2 pound pull
Radian Weapons Talon safety selector
Radian Weapons Raptor charging handle
MAGPUL MOE pistol grip
No sights or optics included
Offered in .308 and 6.5 CM
Made in the USA


Upper and lower sets are also available.


Available for pre-order from

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5 Responses to “NRAAM 18 – GGP S-Heavy & Light Mk II”

  1. Bradkaf308 says:

    Will these ever be available on the GG Canada site? Would be nice.

  2. Adam says:

    It would be nice if they made the lower truly ambidextrous. It isn’t without a left handed magazine release.

  3. Stickman says:

    Any idea when they moved production in house? That is a big step, and pretty awesome.

    Nicely done GW & C!!

    • LL says:

      Yo Stick! What am I?! Chopped liver?! Give us a shout sometime and we’ll fill you in. Miss you guys!

      • Stickman says:

        You are the sexy half of that organization!!

        Mrs Stick misses you all, and she doesn’t say that about most of the industry! I’ll wait until NRA is over then give you a shout.