Spike's Tactical Stripped Lower/Upper Set - Gray

Manufactured by Spike's Tactical
SKU: STS1515
MPN: STS1515
Manufactured by Spike's Tactical
2 Reviews

Out of Stock

NOTE: Limit 3 per household. Quantities exceeding 3 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 Spider Lower is the standard lower receiver on which many of their complete rifles are assembled. Featuring the Spike’s Spider logo engraved prominently on the left side of the magwell. Included in this set, you’ll find the matching Cerakoted gray upper receiver, complete with dust cover and forward assist installed. If you are looking for a set to build your next rifle with, look no further. Spike’s uppers and lowers are made to the highest industry standards and will be the perfect foundation for your build.

  • Spike’s Spider logo with bullet pictogram safety selector markings.
  • 7075-T6 forged, gray Cerakoted upper/lower receiver set.
  • Marked multi-caliber.
  • Low shelf, RDIAS compatible.
  • Forward assist, and ejection port door preassembled.
  • Weight: 1 lb 1 oz.

The mission at Spike’s Tactical is simple, they strive to build the highest quality products offered at the best possible prices. Whether a gun enthusiast, a competitive 3-gun shooter, military, or law enforcement professional, their rifles won't let you down when it counts, guaranteed.
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BrandSpike's Tactical
Caliber MarkingMulti-Caliber
Manufacturer.Spike's Tactical
Receiver Material7075-T6 Aluminum
Trigger Pin DiameterMIL-SPEC .154
Feed RampsM4
Forward Assist
Port Door

WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, see www.p65warnings.ca.gov

Ratings & Reviews

2 reviews

  • 4 stars
  • 0 reviews
  • 2 stars
  • 0 reviews
  • 1 star
  • 0 reviews

Looks good...but...


This receiver set looks great and has no play between the upper and lower. It seems as though it is duracoat not cerakote and therefore fills in the gaps between the upper and lower. The main drawback and reason for 3 stars is because I had to pay a gunsmith $100 to grind off the duracoat from the threads so that the barrel nut would actually go on. You also cannot take it down without using something to push the takedown pins out and something to pound it back in because of the coating. Now that it is finished the build looks great and functions fine but if I had to do it again I would buy an upper and lower receiver set without the duracoat and pay $100 to have it cerakoted properly.

Spikes Tactical Delivers


I purchased the Spikes Tactical upper/lower in FDE.<br>Oden Works 416r barrel and Fail Zero BCG. Fit and finish very good! All components fit well. No modifications required to finish the rifle with standard lower parts kit. I use the Primary Arms fixed 5x optic on this rifle. I waited until barrel was broken in and I had around 500 rounds down range before writing review. No failures, no malfunctions, fully functional and very accurate rifle. I do not have a lead sled or anything like it, but shooting off my ruck with a rear bag produced groups just a shade under 1 moa. I do not use steel ammo but shoot federal 55g or m855. Not great ammo but this rifle delivers the best accuracy possible with the ammo I feed it. This is a work rifle and it does not have an easy life. Next build will be the same but will use the Primary Arms 1x8 for a touch more magnification. These scopes are plenty tough for work and really make ranging and accurate shots easy. Best you can get.