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  1. Aero Precision M4E1 Complete Upper, 18" 6.5 Grendel SS Barrel, EM-15 Gen 2 HG - Anodized Black
    M4E1 Enhanced 18" 6.5 Grendel Complete Upper Receiver
  2. Aero Precision M4E1 Enhanced Complete Upper, 18" 6.5 Grendel SS Barrel 15" M-LOK Quantum HG - Anodized Black
    M4E1 Enhanced 18" 6.5 Grendel Complete Upper Receiver w/ Quantum Handguard
  3. Aero Precision M4E1 Threaded Complete Upper, 18" 6.5 Grendel SS Barrel, ATLAS S-ONE 15" M-LOK HG - Anodized Black
    M4E1 Threaded 18" 6.5 Grendel Complete Upper Receiver w/ ATLAS S-ONE Handguard
  4. Aero Precision M4E1 Threaded Complete Upper, 18" 6.5 Grendel SS Barrel, ATLAS R-ONE 15" M-LOK HG - Anodized
    M4E1 Threaded 18" 6.5 Grendel Complete Upper Receiver w/ ATLAS R-ONE Handguard

4 Items

View as Grid List
per page
Filter by
Sorting Options
  • Position
  • Product Name
  • Price
  • Barrel Length
  • Series
  • With Forward Assist
Low to high