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

Manufactured by Spike's Tactical
Manufactured by Spike's Tactical
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NOTE: Limit 5 per household. Quantities exceeding 5 will not allow checkout.

Items that are regulated by the ATF have restrictions and requirements: 
•Your entire order will ship only to a Federal Firearm License holder.
•Current processing time is approximately 14 to 16 days.
•Please contact your local FFL prior to placing your order to ensure they are still accepting transfers. Due to Covid-19 many are no longer open
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to ffl@primaryarms.com.



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 LRS-1 suppressor tucked underneath the Spike's Tactical BAR2 quad rail handguard with Titanium barrel nut. The LRS-1 suppressor features Nitride coated high temp alloy baffles and a Titanium body. Yes, that does make this a two stamp rifle, but then you get to participate in two stamp Tuesdays, so it balances out. Moving further back, the rifle is built on receivers that are fully machined from a billet of 7075-T6 aluminum allowing for a high degree of customization both in terms of looks and functionality. 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 your short barrel rifle can be set up 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 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 ambi lower
  • Low shelf RDIAS compatible
  • Nickel Boron trigger group with KNS anti rotation pins
  • Light weight hammer with JP low power spring
  • Magpul MOE grip and CTR stock
  • 17-7 Stainless buffer spring with ST-T3 buffer weight
  • LRS-1 Titanium 5.56 suppressor with pouch

  • Spike's Tactical folding sights
  • SureFire M600 Scout light with Z68 switch
  • Magpul RSA rail sling attachment
  • Magpul AFG-2 angled grip
  • Magpul MS4 Dual QD Sling Gen 2
  • Soft rifle case
  • 30 round PMAG
  • Manual

Moving to the internals, this AR-15 SBR features a Nickel Boron 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 billet lower is low shelf RDIAS compatible but comes with a semi-auto Nickel Boron trigger group with a light weight 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.

Additional accessories included are a SureFire M600 Ultra 1000 Lumen scout light with a Z68 tape switch, Magpul RSA Rail Sling Attachment, Magpul AFG-2 angled grip, and a Magpul MS4 Dual QD Sling Gen 2.
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Barrel CoatingSalt Bath Nitride
Barrel Length8.1
Barrel LiningSalt Bath Nitride
BrandSpike's Tactical
Caliber Gauge5.56 NATO
Gas System LengthPistol
Gas System TypeDirect Impingement
Handguard9 in Quad Rail
Thread Pattern1/2 X 28
Twist Rate1:7

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