10.5 inch AR-15 Side Charging 458 Socom Pistol Length Stainless Upper Complete Kit

Special Price $399.99 Regular Price $559.99
In 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 time if you email or leave a message, we usually respond the same day or next business day.

Turnaround Time

We usually take only 2-3 business days to build and test your upper before shipping it. We never take weeks to ship your upper. Accessories ship even faster. Check the live status update on the banner at our homepage for current wait times.


We always specify the manufacturer of the major components therefore you know what you are getting. We only use made in America components from quality manufacturers.


BCA Side Charging Upper Receiver - comes with side charging handle, screw rear plug and side charging 458 Socom BCG.
BCA 10.5 inch 458 Socom Pistol Length 1/14 Twist 416R Stainless Steel Barrel
Low profile Nitride STEEL gas block
Stainless Steel Pistol length gas tube
Guntec USA 9 inch Keymod Slim Profile Free Float Rail
Kak Industry 5/8-32 A2 Compensator and crush washer
Unbranded AR ELG Lower Parts Kit
Shockwave Stabilizer Blade Kit
*Optional*: Upgrade to a Kaw Valley Precision Linear Compensator

All parts are MADE IN THE USA.

The BCA Side Charging Upper Receiver comes complete with the side charging handle and side charging BCG. For those who prefer an AK47 style charging pattern. Compatible with all standard AR-15 lower receivers. Just pin it to your lower and you are ready to rock and roll.

BCA makes quality barrels. Made out of premium 416R stainless steel for enhanced corrosion resistance and accuracy. 

The Guntec rail is very high quality and comparable to many other higher end rails that cost 2x or 3x as much. Barrel nut and screws are hardened steel and the mounting system is rock solid.

Gas Block diameter is 0.936 and is made out of steel (not aluminum).

***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.***

*Optional* - Upgrade to a Kaw Valley Precision Linear Compensator.

More Information
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