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Spikes Tactical ST Compressor 8.1" 5.56mm Upper Receiver w/ LRS-1

Spikes Tactical ST Compressor 8.1" (silencer) Upper Receiver w/ LRS-1, 5.56mm NATO, NFA Item

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The Spike's Tactical Compressor Complete Upper is the long awaited culmination of SBR and suppressor technology. Developed in conjunction with active law enforcement, the ST Compressor Upper has been brutally overbuilt without losing the finer points that make it Sub MOA accurate at extended ranges. The ST Compressor Upper is the first factory produced SBR Upper with an integrated sound suppressor that requires no maintenance. By employing billet technology, its designers were able to cleanly design-in every feature that was previously applied as an external add on. With the use of self lubricating coatings, and heat-sync technology, the ST Compressor Upper represents the digital upgrading of the analog rifle.

Note: All NFA Rules apply. This item will require a Form 3 transfer to your local dealer and then a Form 4 transfer to you. Make you can legally own this item before purchasing.


  • ST Billet Upper Receiver
  • Integrated Barrel Nut Upper
  • ST 9" BAR Rail w/ Heatshield
  • ST LRS-1 Suppressor
  • ST Compressor 8.1" FN CHF Radial Fluted Barrel
  • ST Pinned Gas Block w/ Integrated Collar
  • ST DynaComp Muzzle Device w/ Integrated Mount
  • ST Melonite Gas Tube
  • ST Nickle Boron Bolt Carrier Group
  • weight of 5.15lbs (Complete with LRS-1 and BCG)


  • (1) ST Compressor Upper
  • (1) ST LRS-1 Suppressor
  • (3) Low Profile Ladder Rail Covers
Specs - More Info
Additional Info
Caliber .223 / 5.56
Manufacturer Spikes Tactical
Accessory Rail Yes
FFL Requirements All firearms must be shipped to a Class III Federal Firearms License (FFL) holder. We cannot and will not ship firearms to anyone but a FFL. We must receive the receiving dealer's FFL & SOT by fax (314-558-8429) or email ([email protected]).
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