Spikes Tactical Billet ST Compressor 5.56 SBR with MRS-1 Suppressor - 8.1"

Manufactured by Spike's Tactical
Manufactured by Spike's Tactical
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Items that are regulated by the ATF and NFA have restrictions and requirements: •Your Entire Order will ship only to a Federal Firearm License holder •NFA restricted items require class 3 licensing and documentation •A copy of your order/invoice as well as the current FFL License for your local dealer must be emailed to ffl@primaryarms.



The Spike's Tactical Billet ST Compressor 5.56 SBR is the ultimate combination of parts and accessories necessary for duty. Starting with the fun parts first, the ST Compressor features a short 8.1-inch barrel with the MRS-1 suppressor tucked underneath the Spike's Tactical BAR2 quad rail handguard with a Titanium barrel nut. The MRS-1 suppressor features Nitride coated vacuum brazed baffles and a 416 stainless steel body. The rifle is built on a receiver that is fully machined from a billet of 7075-T6 aluminum. The lower receiver features fully ambidextrous controls built directly into it, allowing for right or left-hand use by simply changing shoulders. It comes outfitted with Magpul MOE furniture for better ergonomics and plenty of QD sling sockets so that you can set up your short barrel rifle to your preferences. If you are looking for a 5.56 short barrel rifle with everything you need right out of the box, get the Spikes Tactical ST Compressor.

  • 8.1" Cold hammer-forged barrel in 5.56 NATO
  • Nitride finish with Nickel Boron feed ramps
  • Radial fluting for better extraction
  • Pistol length gas system
  • Copper heat sink on the gas tube
  • 9" BAR2 free float quad rail handguard
  • Titanium barrel nut
  • Radian Raptor SD charging handle
  • Light Weight Nickel Boron M16 BCG
  • Billet 7075-T6 receivers with fully ambidextrous lower
  • Low shelf RDIAS compatible
  • Nickel Boron trigger group with KNS anti-rotation pins
  • Lightweight hammer with JP low power spring
  • Magpul MOE grip and CTR stock
  • 17-7 Stainless buffer spring with ST-T3 buffer weight
  • MRS-1 416 Stainless Steel 5.56 suppressor with pouch

Moving to the internals, this SBR features a Nickel Boron M16 BCG that has been HPT and MPI to ensure durability and reliability. The pistol-length gas tube is fully Nitrided and has a copper heat sink for longevity. The Gen II billet lower is low shelf RDIAS compatible but comes with a semi-auto Nickel Boron trigger group with a lightweight hammer and JP low power hammer spring. Other lower parts included are a Battle Arms safety selector, billet magazine release, and a 17-7 stainless buffer spring with an ST-T3 buffer weight.
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Barrel Coating
BrandSpike's Tactical

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