Davidson Defense AR-15 Ambidextrous Bolt Catch Lower Build Kit, SBA3 Gray Adjustable Pistol Stabilizing Brace

Davidson Defense AR-15 Ambidextrous Lower Build Kit with Ambi Bolt Catch and SBA3 Gray Pistol Brace

This complete AR-15 lower build kit delivers ambidextrous functionality through a milled ambi bolt catch slot with included ambidextrous bolt catch kit and ambidextrous safety selector, paired with a forged 7075-T6 aluminum serialized lower receiver. The SB Tactical SBA3 adjustable pistol stabilizing brace provides proven SBA3 performance in stealth gray finish. Built around black hardcoat anodized finish and complete Mil-Spec buffer components, this kit supports left and right handed operation for AR-15 pistol platform builds requiring enhanced ambidextrous controls with industry standard SB Tactical brace reliability.

Key Features

• Forged 7075-T6 aluminum serialized lower receiver with milled ambidextrous bolt catch slot and black hardcoat anodized finish
• Ambidextrous bolt catch kit enables left and right handed bolt manipulation
• Ambidextrous safety selector allows fire control access from both sides of receiver
• SB Tactical SBA3 adjustable pistol stabilizing brace in stealth gray finish with five position adjustment
• Complete Mil-Spec buffer system including heavy duty six position carbine buffer tube, standard carbine buffer at 3 oz, carbine recoil spring in spring steel, US Tactical phosphate receiver end plate, and castle nut
• Dual ambidextrous controls support weapon manipulation regardless of shooter handedness

Perfect For

• AR-15 pistol builders requiring ambidextrous controls with proven SB Tactical SBA3 performance
• Left handed shooters seeking complete serialized lower with factory ambi features and adjustable brace
• Builders prioritizing weapon manipulation from either side with stealth gray color accent
• Customizers wanting industry standard SB Tactical quality with five position adjustability

Dual Ambidextrous Control System

The lower receiver features a milled ambidextrous bolt catch slot that accepts the included ambidextrous bolt catch kit, allowing both left and right handed shooters to manipulate the bolt catch and release without shifting grip or reaching across the firearm. The ambidextrous safety selector extends this left and right handed functionality to fire control, enabling shooters to engage or disengage the safety from either side of the receiver. This dual ambidextrous configuration supports complete weapon manipulation regardless of shooter handedness or shooting position. The factory milled bolt catch slot eliminates the need for aftermarket machining or adapter components.

SB Tactical SBA3 Adjustable Pistol Stabilizing Brace

The SB Tactical SBA3 adjustable pistol stabilizing brace is one of the most widely adopted braces in the AR-15 pistol market, delivering proven reliability in stealth gray finish. Five position adjustment accommodates different arm lengths and shooting positions while maintaining the lightweight profile SB Tactical is known for. The brace interfaces with Mil-Spec carbine buffer tubes for consistent fit across AR-15 pattern firearms. SB Tactical's reputation for quality control and consistent manufacturing standards makes the SBA3 a trusted choice for AR-15 pistol builds requiring adjustable positioning with proven performance.

Complete Buffer System and Lower Components

This kit includes a Mil-Spec heavy duty six position carbine buffer tube in aluminum, standard carbine buffer weighing 3 oz, AR-15 carbine recoil spring in spring steel, US Tactical Mil-Spec receiver end plate with phosphate finish for corrosion resistance, and castle nut in black. All buffer components meet Mil-Spec dimensional standards for consistent function across AR-15 pattern firearms. The Davidson Defense lower receiver is forged from 7075-T6 aluminum with black hardcoat anodized finish for protection against wear and corrosion. The receiver is serialized and ready for federal firearms transfer through a licensed dealer. The AR-15 lower parts kit includes all internal components needed for lower function along with ambidextrous safety selector.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable laws. Lower receiver is serialized and subject to federal firearms transfer requirements through a licensed dealer. Verify compatibility of ambidextrous bolt catch with your specific upper receiver and bolt carrier group before installation. Pistol stabilizing braces are subject to federal and state regulations that may change. Verify current regulations in your jurisdiction before use.