4 inch AR-15 Non Reciprocating Side Charging 45 ACP Upper w/CAN Complete Kit

93% of 100
Special Price $769.99 Regular Price $829.99
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.


Gibbz Arms G9 Non Reciprocating Side Charging Upper Receiver with Gen 2 handle
Kak Industry 4 inch 45 ACP 1/16 Twist Melonite 4150 QPQ CMV Barrel
Blowback System (no gas block needed)
Blowback System (no gas tube needed)
Axis 4 inch M-LOK Slim Profile Free Float Rail
Kak Industry .578x28 Slimline Flash Can
Spinta Precision 45 ACP BCG 
Unbranded AR ELG Lower Parts Kit
AR-15 Stabilizing Fin Kit (includes a Kaw Valley Precision Pistol Caliber Extended Length Heavy buffer)
Optional: Upgrade to a SB Tactical SBA3 Adjustable Brace

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

This is a Non Reciprocating Side Charging Upper - keeps the charging handle forward during operation. No need to take your finger off the trigger or lose sight picture to charge the weapon. Can mount your optic as far back are you desire without difficulty in charging weapon.

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 Axis 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.

***NFA/SBR rules apply unless upper is installed on a pistol configured lower receiver. It is the customer's responsibility to know/obey the gun laws in his/her state.***

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 SB Tactical SBA3 Adjustable Brace.

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