13.9” MSF x Criterion pinned & welded 5.56 / 223 Wylde 1:8 Ar15 Mlok Upper



Complete your upper

Add a bolt carrier group and charging handle to complete your upper.


Charging Handle Options

Gas blocking charging handle

Customize your upper

Handguard Options

Gas Block


Foregrip Options

Optic Options

Light Options

Folding Adapter

Lower Parts ?

Ar15 Standard Lower Parts Kit LPK $49.99
Velocity 3lb Enhanced AR-15 Lower Parts Kit LPK $199.00
Ar15 Mil Spec Carbine Buffer Tube Kit $39.99

Custom Dust Cover Engraving

Tools / Extras

Super Duper Extreme Lifetime Warranty

Free replacement 1 time for any not-illegal reason. Shoot it out, stolen, lost, used up, broken, held in evidence in legit self defense, ran over with a truck, lost in a boat, pooped/peed on, herpes, nodes, yeeted, misplaced, eaten by dog, etc, we'll send you another one time. What a deal!!1!1!!!1!!one!1!!

Product price: $599.00
Order total:

Free shipping on all orders over $500

Pinned and welded to legal 16″, this 13.9 criterion barreled upper is professionally built and cuts no corners. Make it complete by pairing it with a Microbest bcg and Breek Arms charging handle (pictured) for your top tier rifle.

  • 223 wylde (shoots 5.56 / 223)
  • 1:8 twist
  • Criterion CORE series barrel
  • Mid length gas
  • .625 Gas block
  • Mlok handguard
  • Mil spec 7075-t6 aluminum upper receiver, anodized black
  • Dust cover, forward assist

Pictured with: ASR 3 prong flash hider, 13″ cnc mlok, Microbest chrome bcg, Breek ambi charging handle. You can choose in the menu which components you want to include.

Additional information

Weight 4 lbs
Dimensions 36 × 4 × 4 in