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Spikes Tactical Carbine Cold Hammer Forged 11.5in Upper Receiver Up to 10% Off w/ Free S&H — 9 models

Special offer available for this product. Click here to see!
Spikes Tactical Upper 5.56 11.5in FN CHF w/M4 Handguards & FSP STU5310-M4S
Spikes Tactical Upper 5.56 11.5in FN CHF w/FDE MOE Handguards & FSP STU5310-MOF
Spikes Tactical Upper 5.56 11.5in FN CHF w/BLK MOE Handguards & FSP STU5310-MOS
Spikes Tactical Upper 5.56 11.5in FN CHF w/7in BAR2 Rail & FSP STU5310-R7S
Spikes Tactical Upper 5.56 11.5in FN CHF w/9in BAR2 Rail STU5310-R9S
Spikes Tactical Upper 5.56 11.5in FN CHF w/10in BAR2 Rail STU5310-R1S
Spikes Tactical Upper 5.56 11.5in FN CHF w/12in BAR2 Rail STU5310-R2S
Spikes Tactical Upper 5.56 11.5in FN CHF w/7in SAR3 Rail & FSP, STU5310-CQ7FP
Spikes Tactical Upper 5.56 11.5in FN CHF w/13.2in BAR2 Rail STU5310-R3S
Spikes Tactical Upper 5.56 11.5in FN CHF w/M4 Handguards & FSP STU5310-M4S
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Spikes Tactical Upper 5.56 11.5in FN CHF w/M4 Handguards & FSP STU5310-M4S
Spikes Tactical Upper 5.56 11.5in FN CHF w/FDE MOE Handguards & FSP STU5310-MOF
2 of 9 images
Spikes Tactical Upper 5.56 11.5in FN CHF w/FDE MOE Handguards & FSP STU5310-MOF
Spikes Tactical Upper 5.56 11.5in FN CHF w/BLK MOE Handguards & FSP STU5310-MOS
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Spikes Tactical Upper 5.56 11.5in FN CHF w/BLK MOE Handguards & FSP STU5310-MOS
Spikes Tactical Upper 5.56 11.5in FN CHF w/7in BAR2 Rail & FSP STU5310-R7S
4 of 9 images
Spikes Tactical Upper 5.56 11.5in FN CHF w/7in BAR2 Rail & FSP STU5310-R7S
Spikes Tactical Upper 5.56 11.5in FN CHF w/9in BAR2 Rail STU5310-R9S
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Spikes Tactical Upper 5.56 11.5in FN CHF w/9in BAR2 Rail STU5310-R9S
Spikes Tactical Upper 5.56 11.5in FN CHF w/10in BAR2 Rail STU5310-R1S
6 of 9 images
Spikes Tactical Upper 5.56 11.5in FN CHF w/10in BAR2 Rail STU5310-R1S
Spikes Tactical Upper 5.56 11.5in FN CHF w/12in BAR2 Rail STU5310-R2S
7 of 9 images
Spikes Tactical Upper 5.56 11.5in FN CHF w/12in BAR2 Rail STU5310-R2S
Spikes Tactical Upper 5.56 11.5in FN CHF w/7in SAR3 Rail & FSP, STU5310-CQ7FP
8 of 9 images
Spikes Tactical Upper 5.56 11.5in FN CHF w/7in SAR3 Rail & FSP, STU5310-CQ7FP
Spikes Tactical Upper 5.56 11.5in FN CHF w/13.2in BAR2 Rail STU5310-R3S
9 of 9 images
Spikes Tactical Upper 5.56 11.5in FN CHF w/13.2in BAR2 Rail STU5310-R3S

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Questions & Answers
Is the muzzle pinned welded? I hope not because I want to run a suppressor. Manufacturer Answer

We recommend that you call us directly with the part number to ensure that you get the correct model. But if in the description it’s not stated pined, it should not be.

by Spikes Tactical, Manufacturer, July 23, 2025
See 1 More Answer
Is the muzzle pinned? Manufacturer Answer

We recommend that you call us directly. To ensure the correct part number.

by Spikes Tactical, Manufacturer, July 23, 2025
View All Q&A You Have a Question? Ask!
Customer Reviews
Most Recent Reviews
Great lightweight Pistol/SBR upper by Cool muzzle device, February 26, 2024
The upper in the picture with the BAR2 quad rail was the upper I ordered but I received the upper with the CRR quad rail which is a newer lightweight quad rail. Not complaining due to how lightweight it is. I have put 350 rounds through this upper wi...
Read More...
0/1 found this helpful
Most Recent Reviews
Best CHF 11.5 Upper by Spikes 11.5 CHF, Verified Owner, June 11, 2025
Been shopping CHF 11.5 uppers for over a year! This is by far the best deal and quality for the money! Spikes and Optics Planet definitely delivered on this deal!!!
Most Recent Reviews
spikes tactical by Jay Peterson, Verified Owner, April 5, 2023
This upper is simply outstanding. Spikes tactical make incredible products. Everything they make is flawless. Their customer support team is amazing. They are also made in USA. This completed upper serves as the best you can buy for the money. The t...
Read More...
Read All 3 Reviews
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ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.

made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Spikes Tactical Carbine Cold Hammer Forged 11.5in Upper Receiver

Our complete upper assemblies will arrive to you inspected, tested, and ready to drop-in and go to work. We maintain our high standard of tolerances and attention to detail as the uppers we use for complete rifle builds. Every built upper and complete gun is test fired before leaving our facility for function check before it reaches you. We offer several rail choices and rail lengths. Use the drop bar to make your selection.image

Specifications for Spikes Tactical Carbine Cold Hammer Forged 11.5in Upper Receiver:

Manufacturer: Spikes Tactical
Caliber: 5.56x45mm NATO
Barrel Length: 11.5 in
Finish: Anodized
Color: Black
Magazine Included: No
Condition: New
Country of Origin: USA

Features of Spikes Tactical Carbine Cold Hammer Forged 11.5in Upper Receiver:

  • SAR3 Rail
  • Forged Upper Receiver
  • 7075 T6 Construction
  • Forward Assist
  • Ejection Port Door
  • Ejection Port Door Spring
  • Ejection Port Door Rod
  • 11.5in Cold Hammer Forged Barrel
  • M249 SAW Chrome Lined Spec
  • DIN 21CrM0V511
  • Light Weight Profile
  • 1/7 Twist Rate
  • 1/2 X 28 Thread Pitch for Muzzle
  • 5.56 Nato Chamber
  • .625 Gas Block Seat
  • M4 Feed Ramped Barrel Extension
  • Mil-Spec Phosphate Coating
  • 7in SAR3 Rail
  • 7075 T6 Barrel Nut
  • 6061 T6 Rail
  • Continuous Top Rail
  • Free Floating 1 Piece
  • Q.D
  • Attachment Points
  • A2 Front Sight Base Pinned
  • Front Sight Post
  • FSP Detent
  • FSP Detent Spring
  • Carbine Gas Tube
  • Black Nitride Inside and Out
  • Gas Tube Roll Pin
  • Charging Handle
  • Forged Aluminum
  • Mil-Spec Type 3 Coating
  • Phosphate M16 Complete BCG
  • Phosphate Coated
  • Laser Engraved with ST Spider logo
  • High Pressure Tested (HPT)
  • Magnetic Particle Inspected (MPI)
  • A2 Flash Hider
  • 1/2in Crush Washer

Package Contents:

  • Spikes Tactical Carbine Cold Hammer Forged 11.5in Upper Receiver

What firearm models does the manufacturer say Spikes Tactical Carbine Cold Hammer Forged 11.5in Upper Receiver is compatible with?

The manufacturer suggests that Spikes Tactical Carbine Cold Hammer Forged 11.5in Upper Receiver is compatible with M4, AR-15

Spikes Tactical Carbine Cold Hammer Forged 11.5in Upper Receiver Orderable Models

List of Orderable Models

  • Spikes Tactical Upper 5.56 11.5in FN CHF w/12in BAR2 Rail, STU5310-R2S , MPN: STU5310-R2S , UPC: 810083267449 , Code: 2A8-UFH-CCHF11UR-STU5310-R2S
  • Spikes Tactical Upper 5.56 11.5in FN CHF w/M4 Handguards & FSP, STU5310-M4S , MPN: STU5310-M4S , UPC: 815648024284 , Code: 2A8-UFH-CCHF11UR-STU5310-M4S
  • Spikes Tactical Upper 5.56 11.5in FN CHF w/9in BAR2 Rail, STU5310-R9S , MPN: STU5310-R9S , UPC: 810083267470 , Code: 2A8-UFH-CCHF11UR-STU5310-R9S
  • Spikes Tactical Upper 5.56 11.5in FN CHF w/10in BAR2 Rail, STU5310-R1S , MPN: STU5310-R1S , UPC: 810083267432 , Code: 2A8-UFH-CCHF11UR-STU5310-R1S
  • Spikes Tactical Upper 5.56 11.5in FN CHF w/13.2in BAR2 Rail, STU5310-R3S , MPN: STU5310-R3S , UPC: 810083267456 , Code: 2A8-UFH-CCHF11UR-STU5310-R3S
  • Spikes Tactical Upper 5.56 11.5in FN CHF w/7in BAR2 Rail & FSP, STU5310-R7S , MPN: STU5310-R7S , UPC: 810083267463 , Code: 2A8-UFH-CCHF11UR-STU5310-R7S
  • Spikes Tactical Upper 5.56 11.5in FN CHF w/7in SAR3 Rail & FSP, STU5310-CQ7FP , MPN: STU5310-CQ7FP , UPC: 810083261089 , Code: 2A8-UFH-CCHF11UR-STU5310-CQ7FP
  • Spikes Tactical Upper 5.56 11.5in FN CHF w/BLK MOE Handguards & FSP, STU5310-MOS , MPN: STU5310-MOS , UPC: 810083267425 , Code: 2A8-UFH-CCHF11UR-STU5310-MOS
  • Spikes Tactical Upper 5.56 11.5in FN CHF w/FDE MOE Handguards & FSP, STU5310-MOF , MPN: STU5310-MOF , UPC: 810083267418 , Code: 2A8-UFH-CCHF11UR-STU5310-MOF

Spikes Tactical Carbine Cold Hammer Forged 11.5in Upper Receiver Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Spikes Tactical Upper 5.56 11.5in FN CHF w/M4 Handguards & FSP, STU5310-M4S , MPN: STU5310-M4S-DEMO , Code: 2A8-UFH-CCHF11UR-STU5310-M4S-DEMO
  • DEMO, Spikes Tactical Upper 5.56 11.5in FN CHF w/7in BAR2 Rail & FSP, STU5310-R7S , MPN: STU5310-R7S-DEMO , Code: 2A8-UFH-CCHF11UR-STU5310-R7S-DEMO
  • Spikes Tactical Upper 5.56 11.5in FN CHF w/9in SAR3 Rail, STU5310-S9S , MPN: STU5310-S9S , Code: 2A8-UFH-CCHF11UR-STU5310-S9S
  • Spikes Tactical Upper 5.56 11.5in FN CHF w/10in SAR3 Rail, STU5310-CQ1F , MPN: STU5310-CQ1F , UPC: 810083261058 , Code: 2A8-UFH-CCHF11UR-STU5310-CQ1F
  • Spikes Tactical Upper 5.56 11.5in FN CHF w/12in SAR3 Rail, STU5310-CQ2F , MPN: STU5310-CQ2F , UPC: 815648024376 , Code: 2A8-UFH-CCHF11UR-STU5310-CQ2F
  • Spikes Tactical Upper 5.56 11.5in FN CHF w/13.2in SAR3 Rail, STU5310-S3S , MPN: STU5310-S3S , UPC: 815648024383 , Code: 2A8-UFH-CCHF11UR-STU5310-S3S
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