10.5 inch Barrel - 1:7 or 1:9 twist

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$149.00 - $345.00

All configuration are in stock now.. except "non-F" FSB models, which are currently backordered due to shortage of non-F FSB nationally. All other models shipping immediately.


Standard 10.5 inch M4 profile barrel as used on a variety of "10"ish" builds (10", 10.3", 10.5").. for example XM177, Commandos, Mk18, C8, etc.

Note on Mk18: Though the 10.3" length is most famous, many Mk18's have also been fielded with 10.5 inch barrels (LMT, Colt).  It is a myth only 10.3" barrels are correct for the Mk18. In fact, there is no "official" configuration for the Mk18.


Why choose this barrel?

  • 10.5 and 11.5 are the two most popular lengths for Pistol or SBR builds
  • Standard length currently used by SOCOM
  • Available in 1:7 or 1:9 twist rate
  • Light Weight: 1.1 lbs
  • Nitride (Melonite) coating - increased Barrel life and corrosion protection
  • 10.5" is the shortest most folks can go and still install a suppressor


We offer this barrel in three levels of Assembly:


  • Stripped Barrel (just the barrel)
  • "F" or "non-F" FSB, no other parts (see Notes below on "Short Pinning")
  • Full Barrel Assembly
    • Tapper Pinned FSB - choice of "F-marked" or "non-F"
    • Thin (single shield) 6 hole Handguards
    • Delta Ring or Slip Ring
    • USGI Barrel Nut
    • Sight Post Assembly, Round or Square Post
    • Gas Tube
    • Sling Swivel Assembly


- If you order a "Non-F" FSB, we will configure the barrel with a Slip Ring and Round Front Sight Post

- If you order a "F" marked FSB, we will include a Delta Ring and Square Front Sight Post

- If you would like some other combination just let us know in the "Comments Section" at Check-Out



Barrel Specs:

  • 10.5 inches
  • 5.56 NATO chamber
  • 1:7 or 1:9 twist
  • 4150 Steel Barrel
  • Nitride Finish
  • .750 (M4 profile)


Barrel Assembly Specs:

  • "F" or "non-F" Front Sight Base (Tapper pinned)
  • Slip Ring or Delta Ring
  • Barrel Nut, Spring and Clip
  • Sling Swivel
  • Round or Square Front Sight Post
  • Gas Tube



All Parts Made in the USA

Lifetime Guarantee


 * Note on Short Pinning:

If all you want is a Barrel with a Front Sight Base and nothing else (Option 2) we will assume you are using a different type of Barrel Nut. We will then complete 99% of the Tapper Pin job and not pound the two Tapper Pins in tight so you can slide on your Barrel Nut. Once assembled, simply pound your two Tapper Pins in tight and you are done. We have done all the Tapper Pin work for you - you just need to do the last 1% of the job and tighten the pins down.


* Note on Full Assembly:

Everything is assembled and tightened to spec. Simply screw the barrel nut to your receiver, install your Gas Tube and you are Good-To-Go.


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