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Custom "You Choose" 18"or 20" .223 Wylde Stainless Steel w/ Mega Arms Billet MML620 Upper Set

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Our Price: $850.00
We currently have 5 available.
Item Number: UK18MEGAMML620
Manufacturer: JSE Surplus
Manufacturer Part No: UK18MEGAMML620

Upgrade / Modification Options

* denotes required field

Upgrade Barrel (Default Shown in Description):*
Charging Handles / Latch
Bolt Carrier Assembly
Upgrade Gas Block (Default Shown in Description):
Change Muzzle Device (Default Shown in Description):

This is a Custom Complete Upper, ready to drop in and fire.

**If you do not make any changes you will receive item as pictured. Make your needed selections to upgrade this upper before you add it to your shopping cart.**

18" Wilson Arms Stainless (base barrel option)
All options listed below are the base options.  Choosing upgrades from the drop down list will change the specs.

  • Chamber - 223 Wylde
  • Profile – HBar
  • Barrel Twist - 1x8 is default twist
  • Barrel Thread - 1/2x28
  • Barrel Steel - 416R Stainless Steel
  • Barrel Finish -Stainless / Fluted
  • Flash Hider – 5.56 Tactical Stryker Comp
  • Handguard – Mega Arms MML620 Mega Ext Rifle MLok Upper System
  • Gas Block - Micro .750 on Mid Gas System
  • Upper Receiver - Mega Arms for the MML620 System (BILLET)
  • Bolt Carrier Group - Included
  • Charging Handle - Included

Mag NOT Included

Warranty: 1 year warranty against manufacturer defect.
***Ammunition Notification*** JSE Surplus test fires every custom upper to verify cycling. We do not guarantee cycling with all ammunition due to vast differences in the quality of ammunition. We will only warranty cycling with US made ammunition. We will not warranty cycling with imported, steel cased or reloaded rounds. Some of the non-warrantied ammo includes: Tula, Wolf and Perfecta.


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