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Spikes Tactical 5.56 Midlength Cold Hammer Forged 16in Upper Receiver Up to 10% Off w/ Free Shipping — 8 models

Spikes STU5435-MLS ST-15 Enhanced Mid Length Upper 5.56 16 CHF Brl Black
Spikes STU5435-MLS ST-15 Enhanced Mid Length Upper 5.56 16 CHF Brl Black
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 10in BAR2 Rail STU5435-R1S
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 9in BAR2 Rail STU5435-R9S
Spike STU5435-R2S ST-15 Enhanced Mid Length Upper 5.56 16 CHF 12 Quad Rail Black
Spike STU5435-R2S ST-15 Enhanced Mid Length Upper 5.56 16 CHF 12 Quad Rail Black
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 13.2in BAR2 Rail STU5435-R3S
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 12in SAR3 Rail, STU5435-CQ2F
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 13.2in SAR3 Rail, STU5435-CQ3F
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 9in SAR3 Rail, STU5435-CQ9FP
Spikes STU5435-MLS ST-15 Enhanced Mid Length Upper 5.56 16 CHF Brl Black
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Spikes STU5435-MLS ST-15 Enhanced Mid Length Upper 5.56 16 CHF Brl Black
Spikes STU5435-MLS ST-15 Enhanced Mid Length Upper 5.56 16 CHF Brl Black
2 of 10 images
Spikes STU5435-MLS ST-15 Enhanced Mid Length Upper 5.56 16 CHF Brl Black
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 10in BAR2 Rail STU5435-R1S
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Spikes Tactical Upper 5.56 16in CHF Midlength w/ 10in BAR2 Rail STU5435-R1S
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 9in BAR2 Rail STU5435-R9S
4 of 10 images
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 9in BAR2 Rail STU5435-R9S
Spike STU5435-R2S ST-15 Enhanced Mid Length Upper 5.56 16 CHF 12 Quad Rail Black
5 of 10 images
Spike STU5435-R2S ST-15 Enhanced Mid Length Upper 5.56 16 CHF 12 Quad Rail Black
Spike STU5435-R2S ST-15 Enhanced Mid Length Upper 5.56 16 CHF 12 Quad Rail Black
6 of 10 images
Spike STU5435-R2S ST-15 Enhanced Mid Length Upper 5.56 16 CHF 12 Quad Rail Black
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 13.2in BAR2 Rail STU5435-R3S
7 of 10 images
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 13.2in BAR2 Rail STU5435-R3S
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 12in SAR3 Rail, STU5435-CQ2F
8 of 10 images
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 12in SAR3 Rail, STU5435-CQ2F
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 13.2in SAR3 Rail, STU5435-CQ3F
9 of 10 images
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 13.2in SAR3 Rail, STU5435-CQ3F
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 9in SAR3 Rail, STU5435-CQ9FP
10 of 10 images
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 9in SAR3 Rail, STU5435-CQ9FP

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Questions & Answers
What’s the twist on the barrel. Manufacturer Answer

Barrel on this upper = 1:7 Twist

by Spikes Tactical, Manufacturer, April 17, 2025
barrel twist rate? Expert Answer

This barrel will have a 1/7 twist.

by Patrick, Gear Expert, November 10, 2021
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review Update to previous review by Fernando, April 6, 2020
Shot about 100 rounds through this upper yesterday. Ran smooth and without hickups. Ammo used was Frontier and Tula. In my previous review I noted the QC issues I observed. Most notable was the very weak staking job on the bcg. I did not see any issu...
Read More...
3/3 found this helpful
Helpful Negative Review Great Price by Fernando, March 25, 2020
Shipping was fast! I only paid $508 with three day shipping while on sale. Inside of the upper showed bare aluminum. The front post has a 2 mm cut on the bottom. The bcg is not properly staked and the finish is rough with visible toolmarks.Two very l...
Read More...
5/6 found this helpful
Read All 2 Reviews
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Product Info for Spikes Tactical 5.56 Midlength Cold Hammer Forged 16in Upper Receiver

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.image

Features/Specifications: 10 BAR2 Rail. 7075 T6 Barrel Nut. 6061 T6 Rail. Continuous Top Rail. Free Floating 1 Piece. Q.D. Attachment Points. Low Profile Gas Block. Solid Billet Steel. .750 I.D. Mid Length 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.

Features/Specifications: 9in 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. Mid Length 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.

Features/Specifications: 12 SAR3 Rail. 7075 T6 Barrel Nut. 6061 T6 Rail. Continuous Top Rail. Free Floating 1 Piece. Q.D. Attachment Points. Low Profile Gas Block. Solid Billet Steel. .750 I.D. Mid Length 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.

Specifications for Spikes Tactical 5.56 Midlength Cold Hammer Forged 16in Upper Receiver:

Manufacturer: Spikes Tactical
Caliber: 5.56x45mm NATO
Barrel Length: 16 in
Color: Black
Gun Model: AR-15
Gun Make: AR Platform
Magazine Included: No
Country of Origin: USA

Package Contents:

  • Spikes Tactical 5.56 Midlength Cold Hammer Forged 16in Upper Receiver

Which weapon models is Spikes Tactical 5.56 Midlength Cold Hammer Forged 16in Upper Receiver compatible with?

Spikes Tactical 5.56 Midlength Cold Hammer Forged 16in Upper Receiver is compatible with AR-15

Spikes Tactical 5.56 Midlength Cold Hammer Forged 16in Upper Receiver Orderable Models

List of Orderable Models

Spikes Tactical Upper 5.56 16in CHF Midlength w/ ML Handguard and FSP, Black, STU5435-MLS , MPN: STU5435-MLS , UPC: 815648023317 , Code: 2A8-UFH-STU5435-STU5435-MLS
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 12in BAR2 Rail, Black, STU5435-R2S , MPN: STU5435-R2S , UPC: 815648023331 , Code: 2A8-UFH-STU5435-STU5435-R2S
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 10in BAR2 Rail, STU5435-R1S , MPN: STU5435-R1S , UPC: 815648023324 , Code: 2A8-UFH-STU5435-STU5435-R1S
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 9in BAR2 Rail, STU5435-R9S , MPN: STU5435-R9S , UPC: 815648023355 , Code: 2A8-UFH-STU5435-STU5435-R9S
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 13.2in BAR2 Rail, STU5435-R3S , MPN: STU5435-R3S , UPC: 815648023348 , Code: 2A8-UFH-STU5435-STU5435-R3S
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 12in SAR3 Rail, STU5435-CQ2F , MPN: STU5435-CQ2F , UPC: 810083266817 , Code: 2A8-UFH-STU5435-STU5435-CQ2F
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 13.2in SAR3 Rail, STU5435-CQ3F , MPN: STU5435-CQ3F , UPC: 810083267746 , Code: 2A8-UFH-STU5435-STU5435-CQ3F
Spikes Tactical Upper 5.56 16in CHF Midlength w/ 9in SAR3 Rail, STU5435-CQ9FP , MPN: STU5435-CQ9FP , UPC: 810083267722 , Code: 2A8-UFH-STU5435-STU5435-CQ9FP
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