16 inch AR-15 45 ACP Pistol Caliber Melonite Upper Complete Kit

Special Price $649.99 Regular Price $699.99
Out of stock

Why Buy From Us?


Don't see the exact configuration you want? No problem, just let us know. Most of the time we can customize with the parts we have just to your liking.


All our uppers have a Lifetime Warranty to the original purchaser. Some conditions apply - click here for details.

Customer Service

We believe in customer service before and after the sale. We never take days or weeks to respond. Most of the time if you email or leave a message, we usually respond the same day or next business day.

Turnaround Time

Most of our uppers are built to order. Our most important goal is to get your order to you as quickly as possible without sacrificing quality. Please check the live status update on the banner above and/or on our homepage for current processing times.


We always specify the manufacturer of the major components therefore you know what you are getting. We only use quality components from well-known manufacturers.


AR-15 45 ACP Billet Aluminum Upper Receiver
Kak Industry 16 inch 45 ACP 1/16 Twist Melonite 4150 CMV Barrel
Blowback System (no gas block needed)
Blowback System (no gas tube needed)
Ghost Firearms 12 inch M-LOK Slim Profile Free Float Rail 
Standard A2 .578x28 Flash Hider and crush washer
Alpha Shooting Sports Nitride 45 ACP BCG and standard charging handle
Unbranded AR ELG Lower Parts Kit
Milspec M4 Stock Kit (includes a Kaw Valley Precision Pistol Caliber Extended Length Heavy buffer)
Optional: Upgrade to a SOPMOD stock
Optional: Change to a Magpul FDE Receiver and 11.5 inch FDE Keymod "C" Handguard (See Pictures for example) (choose from options above)

We only use quality parts from reputable manufacturers in the industry.

Upper is compatible with Colt or Glock Style AR-15 lower receivers.

All our pistol caliber kits includes a Kaw Valley Precision Pistol Caliber Extended Length Heavy Buffer.

Kak Industry makes very high quality barrels. Made out of milspec 4150 CMV and melonited for enhanced corrosion protection and lubricity.

The Ghost rail is very high quality and comparable to many other higher end rails that cost 2x or 3x as much. Handguard is lightweight, made from high quality 6061 aluminum and mounting system is rock solid.

45 ACP Uppers utilize a blowback system - no gas tube or gas block needed.

Note:- Pistol caliber AR-15 barrels have their chambers "built" into the barrel extension area therefore they are about 1 inch shorter than centerfire rifle AR barrels.

*Optional* - Upgrade to a SOPMOD stock.

*Optional* - Like a Magpul FDE colored receiver and hanguard instead? We now offer an Aero Precision Upper Receiver and 11.5 inch Guntec Keymod "C" Rail in Magpul FDE color (see pictures) - choose from options above.

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