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Spikes Tactical 16in Midlength - 5.56 Barrel Extension Color: Black, Caliber: 5.56x45mm NATO, $36.99 Off w/ Free Shipping

Spikes Tactical Barrel 5.56 - 16in Midlength LE w/ FSP SB51605-ML9
Spikes Tactical Barrel 5.56 - 16in Midlength LE w/ FSP SB51605-ML9
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Spikes Tactical Barrel 5.56 - 16in Midlength LE w/ FSP SB51605-ML9

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Questions & Answers
what's the difference between this barrel and the M4 LE barrel Expert Answer

This barrel has a mid length gas system. The M4 LE barrel has a carbine length gas system and also has a M4 barrel profile.

by Nick B., Gear Expert, November 18, 2021
See 1 More Answer
What type of handguard cap is it, circular or triangular? Expert Answer

This does not come with a handguard end cap.

by Nick B., Gear Expert, November 11, 2021
View All Q&A You Have a Question? Ask!
Customer Reviews
Most Recent Reviews
First AR build by gobi, July 14, 2019
Buying a pre-drilled and pinned barrel was a must for my first build. Would reccomend to anyone without the tools or contact for a gunsmith. I did have to pull the FSB off to change the handgaurd cap as it didn't work with my handgaurd.
Read 1 Review
Color:
Black
Caliber:
5.56x45mm NATO
Barrel Length:
16 in
Gas System Length:
Mid Length
Barrel Twist Rate:
1-7
Additional Features:
w/ FSP
Firearms Threads Per Inch:
1/2x28

Code: 2A8-ATB-STMDLRLEXT-SB51605-ML9

MPN: SB51605-ML9

UPC: 815648020989

List: $369.95Save 10%
$332.96

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 16in Midlength - 5.56 Barrel Extension

This Spikes Tactical 16in Midlength - 5.56 Barrel Extension is a premium component that will completely transform your rifle build. These Rifle Barrels made by Spikes Tactical are machined to exacting tolerances from MIL-B-11595E CMV steel complete with a chrome-lined interior to greatly reduce bore related issues that can plague some home built systems. This Spikes Tactical 16in Midlength - 5.56 Barrel Extension has a 1/2x28 thimble for the muzzle with a 1/2x28 thread pitch and also comes with a .750 gas block seat so that you can use most M4 rifle brakes with this barrel. Customize your firearm with this premium Spikes Tactical 16in Midlength - 5.56 Chamber Barrel w/ A2 Front Sight Base.image

Specifications for Spikes Tactical 16in Midlength - 5.56 Barrel Extension:

Manufacturer: Spikes Tactical
Color: Black
Caliber: 5.56x45mm NATO
Barrel Length: 16 in
Gas System Length: Mid Length
Barrel Twist Rate: 1-7
Additional Features: w/ FSP
Firearms Threads Per Inch: 1/2x28
Country of Origin: USA

Features of Spikes Tactical 16in Midlength - 5.56 Barrel Extension:

  • 16in Mid Length Barrel
  • MIL-B-11595E CMV
  • Chrome Lined
  • 1/7 Twist Rate
  • 1/2 X 28 Thread Pitch for Muzzle
  • 5.56 Nato Chamber
  • .750 Gas Block Seat
  • M4 Feed Ramped Barrel Extension
  • MilSpec Phosphate Coating
  • Midlength Gas
  • Weight: 1lb 12oz
  • Front Sight Base
  • 16in Mid Length Barrel
  • MIL-B-11595E CMV
  • Chrome Lined
  • 1/7 Twist Rate
  • 1/2 X 28 Thread Pitch for Muzzle
  • 5.56 Nato Chamber
  • .750 Gas Block Seat
  • M4 Feed Ramped Barrel Extension
  • MilSpec Phosphate Coating
  • Midlength Gas
  • A2 Front Sight Base Pinned
  • Front Sight Post
  • FSP Detent
  • FSP Detent Spring
  • Sling Swivel
  • Delta Ring Assembly
  • MilSpec Barrel Nut
  • Delta Ring
  • Weld Spring
  • Snap Ring
  • Weight: 2lb 4oz
  • Low Profile Gas Block
  • 16in Mid Length Barrel
  • MIL-B-11595E CMV
  • Chrome Lined
  • 1/7 Twist Rate
  • 1/2 X 28 Thread Pitch for Muzzle
  • 5.56 Nato Chamber
  • .750 Gas Block Seat
  • M4 Feed Ramped Barrel Extension
  • MilSpec Phosphate Coating
  • Midlength Gas
  • Low Profile Gas Block
  • Single Pinned and Single Set Screw
  • Solid Billet Steel
  • .750 I.D.
  • Weight: 1lb 14oz

Package Contents:

  • Spikes Tactical 16in Midlength - 5.56 Barrel Extension

Spikes Tactical 16in Midlength - 5.56 Barrel Extension Orderable Models

List of Orderable Models

  • Spikes Tactical Barrel 5.56 - 16in Midlength LE w/ FSP, SB51605-ML9 , MPN: SB51605-ML9 , UPC: 815648020989 , Code: 2A8-ATB-STMDLRLEXT-SB51605-ML9

Spikes Tactical 16in Midlength - 5.56 Barrel Extension Unavailable & Discontinued Models

List of Unorderable Models

  • Spikes Tactical Barrel 5.56 - 16in Midlength LE w/ Gas Block, SB51605-MLG , MPN: SB51605-MLG , UPC: 815648020996 , Code: 2A8-ATB-STMDLRLEXT-SB51605-MLG
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Last updated 2026-10-13 UTC.