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Mega Arms GTR-3S AR15 Ambidextrous Billet Lower

MSRP: $237.00
Our Price: $177.75
You Save: $59.25 (25 %)
In Stock and Ready to Ship!
Item Number: M0514-HA
Manufacturer: Mega Arms
Manufacturer Part No: 603964880895
Must ship to a licensed FFL

If you want stand out from the rest of the crowd, this is the ambidextrous lower you need for your next AR build.  The ambidextrous Mega Billet Lower features a clean, new, custom look unlike any of Mega’s competitors and comes with hardware for the integrated ambidextrous bolt catch. 

Note: GTR-3S is designed to best fit forged uppers. 

·       GTR-3S AMBI matches standard forged upper receivers.

·       Black hard anodized with a surface hardness of 60 Rockwell.

·       Machined from billet 7075-T6 aluminum versus the more commonly used 6061 for a 70% increase in strength.

·       Integrated trigger guard for added functionality, and strength.

·       Lower features a nylon tipped upper tensioning screw.

·       Magwell features an enlarged bottom flare and inner chamfer for easier magazine insertion.

·       Butt Stock attachment feature fortified for added strength in high power applications.

·       Weight 9.1 oz.

·       Made in the U.S.A.


ALL FIREARM SALES ARE FINAL.  No returns once FFL transfer is complete.  All firearm and warranty issues must be handled directly with the manufacturer.  

Please note that the sale of firearms is restricted:


·       Firearms must be shipped to a Licensed Federal Firearms Dealer in your state of residence.

·       It is YOUR responsibility to determine if the firearm and the magazine is legal in your state before you order.

·       Your FFL must e-mail their license to us before we ship the firearm, email:

·       All local transfer fees and taxes are the responsibility of the buyer (we do not charge a transfer fee on our end).

·       Firearms for sale in the USA only.

·       Texas residents may pick up the firearm at our office in person after passing a background check.

·       Texas State residents must pay sales tax on purchases.

·       We can help you find an FFL in your area please provide us with your zip code