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  3. SB Tactical SBA6 5-Position Adjustable Pistol Stabilizing Brace Kit with Mil-Spec 6-Position Buffer Tube, Davidson Defense 9mm Carbine Buffer, Carbine Spring, End Plate, Castle Nut & Match Grade Gen 2 31-Piece LPK with 3.5 lb Skeletonized Straight Trigger

SB Tactical SBA6 5-Position Adjustable Pistol Stabilizing Brace Kit with Mil-Spec 6-Position Buffer Tube, Davidson Defense 9mm Carbine Buffer, Carbine Spring, End Plate, Castle Nut & Match Grade Gen 2 31-Piece LPK with 3.5 lb Skeletonized Straight Trigger

Part Number: CO-66028
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Details

SB Tactical SBA6 5-Position Adjustable Pistol Stabilizing Brace Kit with Mil-Spec 6-Position Buffer Tube, Davidson Defense 9mm Carbine Buffer, Carbine Spring, End Plate, Castle Nut & Match Grade Gen 2 31-Piece LPK with 3.5 lb Skeletonized Straight Trigger

This kit pairs an SB Tactical SBA6 pistol stabilizing brace with a complete Mil-Spec heavy-duty six-position carbine buffer tube system fitted with 9mm-specific buffer hardware and a Davidson Defense Match Grade Gen 2 31-piece Lower Parts Kit, covering nearly everything needed to complete an AR-9 pistol build's lower short of the receiver itself.

Key Features

  • SB Tactical SBA6 pistol stabilizing brace, 5-position adjustable
  • Slim, lightweight, snag-resistant carbine-style profile
  • Adjustable nylon stabilizing strap included
  • Mil-Spec heavy-duty 6-position aluminum buffer tube
  • Davidson Defense AR-15 9mm carbine buffer and USA-made recoil spring
  • Davidson Defense Match Grade Gen 2 31-piece Lower Parts Kit with 3.5-lb skeletonized straight trigger
  • US Tactical Mil-Spec receiver end plate and carbine castle nut included

Stabilizing Brace

The SBA6 is molded from high-strength, impact-resistant polymer in a streamlined, carbine-style profile and finished in matte black. It adjusts across 5 positions, running from approximately 6.2 to 10.25 inches in length depending on the position selected, with a height of roughly 4.5 to 5.0 inches and a width of up to 2.1 inches at its widest point. The rear surface carries a slim, non-slip rubberized texture, and an adjustable nylon stabilizing strap is included for securing the brace to the forearm.

Lower Parts Kit and Trigger

At the heart of this kit is a Davidson Defense 31-piece Match Grade Gen 2 Lower Parts Kit, built for standard Mil-Spec AR-15 lower receivers and made in the USA from a mix of steel, aluminum, and polymer. The centerpiece is a single-stage trigger with a straight, skeletonized shoe, machined from steel and finished in black oxide, breaking at a light 3.5-pound pull weight suited to precision shooting and competition-oriented builds. The complete fire control group is included alongside the trigger, and a Mil-Spec A2 grip finished in black polymer rounds out the kit's ergonomics.

Buffer Tube and Buffer System

Behind the brace sits a Mil-Spec heavy-duty six-position carbine buffer tube, machined from aluminum and finished in black, holding a Davidson Defense AR-15 9mm carbine buffer built for 9mm pistol-caliber carbine applications and a standard USA-made recoil spring. A US Tactical AR-15/M16 Mil-Spec receiver end plate and AR-15 carbine castle nut secure the entire buffer tube assembly to the lower receiver.

Follow all manufacturer instructions and safe handling practices.
Ensure compliance with all applicable federal, state, and local laws.

Specifications

Brace Brand: SB Tactical

Brace Model: SBA6

Brace MPN: SBA6X-01-SB

Brace SKU: 51655232324

Brace UPC: 69961878358

Product Type: AR-15 Pistol Stabilizing Brace, 9mm Buffer System, and Match Grade Lower Parts Kit Bundle

Platform Compatibility: AR-15 and AR-Pattern Platforms Accepting a Mil-Spec Carbine Receiver Extension

Brace Adjustment: 5-Position Adjustable

Brace Mounting Interface: Mil-Spec Carbine Receiver Extension / Buffer Tube

Brace Attachment Style: Slide-On Adjustable Carbine-Style Mount

Brace Construction: High-Strength Impact-Resistant Polymer

Brace Color: Black

Brace Finish: Matte Black

Brace Style: Streamlined Carbine-Style

Brace Rear Surface: Slim Non-Slip Rubberized Surface

Brace Strap: Adjustable Nylon Stabilizing Strap

Brace Approximate Length: 6.2" to 10.25", Depending on Adjustment Position

Brace Approximate Height: 4.5" to 5.0"

Brace Approximate Width: 1.8" to 2.1" at Widest Point

Brace Approximate Weight: 9 oz.

Buffer Tube: Mil-Spec Heavy-Duty AR-15 6-Position Carbine Buffer Tube

Buffer Brand: Davidson Defense

Buffer Type: AR-15 9mm Carbine Buffer

Buffer Platform: AR-15 9mm / Pistol Caliber Carbine Applications

Buffer Spring: Standard AR-15 Carbine Recoil Spring

Buffer Spring Country of Origin: Made in the USA

Receiver End Plate: US Tactical AR-15 / M16 Mil-Spec Receiver End Plate

Castle Nut: AR-15 Carbine Castle Nut

Lower Parts Kit Brand: Davidson Defense

Lower Parts Kit Series: Match Grade Gen 2

Lower Parts Kit Platform: AR-15

Lower Parts Kit Part Count: 31 Pieces

Lower Parts Kit Type: Match Grade Lower Parts Kit

Fire Control Group Included: Yes

Trigger Style: Straight Trigger Shoe

Trigger Design: Skeletonized

Trigger Type: Single Stage

Trigger Pull Weight: 3.5 lbs.

Trigger Material: Steel

Trigger Finish: Black Oxide

Grip Included: Yes

Grip Style: Mil-Spec A2

Grip Color: Black

LPK Material Composition: Steel, Aluminum, and Polymer

LPK Component Finishes: Black Oxide, Phosphate, and Anodized

LPK Compatibility: Standard Mil-Spec AR-15 Lower Receivers

LPK Country of Origin: USA

Included: SB Tactical SBA6 5-Position Adjustable Stabilizing Brace with Nylon Strap, Mil-Spec 6-Position Buffer Tube, Davidson Defense AR-15 9mm Carbine Buffer, Standard Carbine Recoil Spring, US Tactical Mil-Spec Receiver End Plate, Carbine Castle Nut, and Davidson Defense Match Grade Gen 2 31-Piece AR-15 Lower Parts Kit with 3.5 lb Skeletonized Straight Trigger and A2 Grip

Buffer System Type: AR-15 9mm Carbine Buffer System with Mil-Spec 6-Position Receiver ExtensionSupplier: Kit

Product: SB Tactical SBA6 5-Position Adjustable Pistol Stabilizing Brace Kit with Mil-Spec 6-Position Buffer Tube, Davidson Defense 9mm Carbine Buffer, Carbine Spring, End Plate, Castle Nut & Match Grade Gen 2 31-Piece LPK with 3.5 lb Skeletonized Straight Trigger

Platform: AR-9

Caliber: 9mm (9x19)

Color: Black

Pistol Brace / Stock: SB Tactical SBA6 5-Position Adjustable Pistol Stabilizing Brace, Black, Mil-Spec Carbine Receiver Extension Mount, High-Strength Impact-Resistant Polymer, Adjustable Nylon Stabilizing Strap

Buffer Tube Kit: Mil-Spec Heavy-Duty AR-15 6-Position Buffer Tube, Aluminum, Black

Component: AR-15 9mm Carbine Buffer, Davidson Defense (Qty 1)

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