B-SQUARE Fore End AR-15 M16 M4 Blk Rail Kit RK-M4-2-BB

Vendor: B-Square


  • Allows for quick attachment of 3 rails to forward end of AR15, M4 and M16 rifles
  • Can attach 2 accessories to upper forearm and 1 to bottom rail
  • No modifications required
  • Polymer construction
  • Lightweight and durable
  • Can be reversed to have one rail on top with 2 below
  • Locks securely into place using holes in standard forend
  • Available in Tactical Black only