Blem MSF 16" 5.56/223 1:8 Ar15 Upper, slim Mlok or Keymod Rail
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Pin this new upper to your Ar15 lower and make your rifle look amazing!  Why buy a basic upper with a plastic handguard when you can buy this one that is already upgraded with a slim free float handguard?


  • 16" 4150 CM m4 Barrel
  • 1:8 Twist
  • 1/2-28 Threads
  • 7075-t6 mil spec aluminum black anodized receiver
  • Carbine Gas system
  • .750 Low profile steel gas block
  • A2 Flash hider or specter flash hider
  • Free Float slim Mlok or Keymod handguard

Other options such as BCG and Charging Handle can be edited/added using the checkboxes and drop-down menus on this page.
Note: Pictured with specter flash hider. If you want that instead of the a2, select it from the menu. same price.
Note: If you have a rail preference, select it from the menu. Otherwise we'll decide from what's first available.

Our uppers come with a limited lifetime warranty against defects in material/workmanship.  We guarantee our products will function and we'll make sure that you're happy with your purchase!

These uppers may have some cosmetic blemishes but should still function properly.


  • Item #: 16blem-slimrail

Blem MSF 16" 5.56/223 1:8 Ar15 Upper, slim Mlok or Keymod Rail

Price: $429.00
Sale Price: $249.00
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