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  1. Standard Issue M4 Configurations - 2018 Edition - AR15.COM

  2. Rifle vs m4 feed ramps - AR15.COM

  3. How does the Mossberg 940 Tactical compare to the Benelli M4

  4. Marine Recon M4 - AR15.COM

  5. What triggers work with the Tippman M4-22? UPDATE: 3/30

  6. Benelli M4 vs Beretta 1301 - AR15.COM

  7. Official FBI/ HRT/ Reg. SWAT Clone Picture and Discussion Thread

  8. Panzer arms M4 vs Mac 1014 - AR15.COM

  9. Maybe a dumb question, but what does "Block 1", "Block 2", …

  10. How Special are M4 Commando marked Lowers? - AR15.COM

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