ATI MilSport Complete Upper 300 Blackout 16" Barrel 15" M-LOK Handguard

CMMG 30BC40AMB Resolute MK4 300 Blackout 16.10", Midnight Bronze, M-LOK Free-Float Handguard for AR-Platform (No BCG or Charging Handle)

ALEXANDER AR15 STANDARD UPPER - 300AAC 16" BLACK

ATI American Tactical Alpha Maxx 300 Blackout 16" Barrel ATIGAX30011MLT30

AMERICAN TACTICAL IMPORTS AR15 Milsport RIA Alum Rec 300Blk 16" Rgr Stk 30rd

AERO PRECISION M4E1 Complete Upper 5.56 NATO 16" HBAR CMV Barrel, 15" ATLAS R-ONE M-LOK Handguard

LANTAC SF15 Recon Complete Upper Receiver 300 Blk 16"

Steyr AUG A3 M2 300 Blackout 16" Barrel MUD Stock Steyr Mag Pattern AUGM2MUDEXT300