Bushmaster® BFSIII® M4 Built Lower Receiver

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SKU: 00-20011-BLK
The BFSIII® Built Lower Receiver is a top-quality firearm accessory. It features a 7075 Forged XM15-E2S™ Lower Receiver, a 6 Position Buffer Tube, and an M4 Carbine Stock. The BFSIII® AR-C1 Trigger and Ambi-Safety Selector offer ultimate control, with Safe, Semi, and Binary trigger positions. If you're looking for a reliable and high-performing lower receiver, look no further than the BFSIII® Built Lower Receiver.

Why we made Bushmaster® BFSIII® M4 Built Lower Receiver

The BFSIII® Built Lower Receiver, the perfect addition to your firearm collection. Crafted with precision and built for performance, this lower receiver boasts a weight of just 2 LBS and a range of impressive features.

Constructed from a 7075 Forged XM15-E2S™ Lower Receiver, this receiver is designed to withstand the toughest of conditions. The 6 Position Buffer Tube and M4 Carbine Stock offer a comfortable shooting experience, while the A2 Pistol Grip ensures a firm grip on your firearm at all times.

In terms of safety, the BFSIII® Built Lower Receiver comes with a Mil-Spec Trigger Guard, as well as a BFSIII® AR-C1 Trigger and BFSIII® Ambi-Safety Selector. With three trigger positions - Safe, Semi, and Binary - you have complete control over your shooting experience. In binary mode, the trigger fires one round on the pull and one on the release of the trigger, with the second round being cancellable via the safety selector. In semi-automatic mode only one round is fired per pull, and in safe mode the gun will not fire.

Please note that the BFSIII® trigger is not available for civilian sales in CA, DC, IA, NJ, NY, HI, DE, RI, FL, MD, CT, or WA.

Features & Specifications

Lower Receiver Material:
7075 Aluminum Alloy
Model Marking:
BFI® M4 Carbine Stock
A2 Pistol Grip
Trigger Guard:
Mil-Spec Trigger Guard
Safety Selector:
BFSIII® AR-C1 Ambi Selector
Not Provided
Proudly Made In:

Important Information

Firearms Shipments:
In accordance with federal regulations, firearms may only be shipped to a licensed dealer. To avoid any delays in delivery, kindly ensure that you provide the FFL Dealer's information in the Shipping Directions when placing your order. If you do not provide the information with your order, we will reach out and request you provide us with your dealer's information to obtain a copy of their FFL. Once we receive the FFL, we will begin processing your order, and the lead time will start from that point. Please feel free to reach out to us at FFL@bushmaster.com if you have any queries or concerns regarding this proces.

Lower Receivers Shipments:
Lower receivers are also considered firearms under federal regulations and require an FFL (Federal Firearms License) prior to shipment. Therefore, it is important to ensure that your FFL dealer sends us a copy of their license, along with your name and order number via email. We appreciate your attention to this matter as it helps us ensure a smooth and timely delivery of your order. If you have any questions or concerns about this process, please do not hesitate to contact us at FFL@bushmaster.com

Magazines Shipments:
The magazine capacity of the firearm will depend on the jurisdictional restrictions of your state of residence. We want to ensure you receive a product that complies with your state's regulations.

Shipping to Alaska or Hawaii:
If you're shipping to Alaska or Hawaii, please be aware that there may be additional shipping charges. If applicable, we will contact you at the time of shipment to discuss additional costs. As always, your satisfaction is our top priority.

Important Information:
Warning: This product can expose you to chemicals, including lead, known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to - https://www.P65Warnings.ca.gov