BMS 300Blk Upper: 10.5" + welded Suppressor Shroud = Legal 16"
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Want to use a suppressor but don't want your setup to be ridiculously long? Wish you could reduce length by using a shorter barrel, without having to register as an SBR? This upper is your answer. It has a 10.5" barrel with a 5.5" shroud that is permanently attached, for a legal 16" rifle length. Your direct thread suppressor (max 1.59" diameter) will fit inside the shroud for a streamlined, compact look without having to go through the SBR papaerwork. It also comes with a threaded extension for use in place of a suppressor so you don't burn your hands. The BMS free-float handguard works with removable picatinny rail sections (top & bottom) as well and has holes for mounts.


  • BMS 300blk Upper.
  • 10.5" 300 AAC / Blackout Barrel + 5.5" pin/welded Shroud = 16" length.
  • 1:8 Twist, 4150 Chrome Moly steel barrel
  • Pistol gas system
  • Will accomodate most direct thread suppressors. 5/8-24 Barrel Threads. 
  • Shroud is 1.6" internal diameter.
  • 7075-t6 Aluminum receiver.
  • Dust Cover, Forward Assist
  • Threaded extension (for use when suppressor not installed)
  • Free Float Keymod Handguard (cutout pattern varies)

Note: This upper is custom built and may take up to a month depending on demand, coatings, etc.
We are unable to sell just the shroud/barrel by itself. We only sell the setup as an assembled upper.


  • Item #: bms30

BMS 300Blk Upper: 10.5" + welded Suppressor Shroud = Legal 16"

Price: $1,162.92
Sale Price: $990.91
Availability: Out-of-Stock
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