Dirty Bird SBA3 Lower Build Kit
The Dirty Bird Industries SBA3 Lower Build Kit includes everything needed to finish your AR Pistol Lower Receiver using the ever-popular SB Tactical SBA3 Stabilizing Brace. This kit includes the Dirty Bird enhanced Lower Parts Kit, which features their 5-star-rated Nickel Teflon Single-Stage Trigger Group. This trigger features honed and polished engagement surfaces, a slick and durable Nickel Teflon finish, and finely tuned trigger/hammer spring rates. This means you get a smooth trigger pull with very little take-up and a crisp, clean break at 5 – 5.5 pounds. Additionally, you’ll get an enhanced polymer trigger guard and an extra takedown/pivot pin detent and spring in case one gets lost during installation. The kit also includes the Dirty Bird AR-15 True Mil-Spec Carbine Receiver Extension / Buffer Kit. This popular buffer kit features a true Mil-Spec 6-Position Receiver Extension (buffer tube) machined from American-made 7075-T6 Aluminum, a 3oz Carbine Recoil Buffer with steel counterweights, a chrome-silicon buffer spring, a hardened castle nut with staking cuts, and a Mil-Spec end plate.
Each component in this kit, down to the springs and detents, is sourced from the best of the best, and they’re all 100% American Made.
Includes
- SB Tactical SBA3 Pistol Stabilizing Brace
- Dirty Bird AR-15 True Mil-Spec Carbine Receiver Extension / Buffer Kit
- 7075-T6 Aluminum 6-Position Mil-Spec Receiver Extension (7075-T6 Aluminum is nearly twice as strong as 6061)
- 3oz Carbine Recoil Buffer w/ Steel Counter Weights
- Hardened Castle Nut w/ Staking Cuts
- Mil-Spec End Plate
- Dirty Bird Enhanced Lower Parts kit
- Nickel Teflon Trigger Group
- Nickel Teflon Honed and Polished Trigger and Hammer
- Enhanced Disconnector
- Disconnector Spring
- Trigger Spring
- Hammer Spring
- Trigger / Hammer Pins (x2)
- Bolt Catch
- Magazine Catch
- Magazine Catch Button
- Safety Selector
- Enhanced Polymer Trigger Guard (w/ set screw)
- Trigger / Hammer Pins (x2)
- Takedown Pin
- Pivot Pin
- Takedown / Pivot Pin Springs (x3)
- Takedown / Pivot Pin Detents (x3)
- Safety Selector Detent
- Safety Selector Detent Spring
- Magazine Catch Spring
- Trigger Guard Roll Pin
- Bolt Catch Detent
- Bolt Catch Detent Spring
- Bolt Catch Roll Pin
- Buffer Retainer / Detent
- Buffer Retainer / Detent Spring
- A2 Pistol Grip Assembly
- Nickel Teflon Trigger Group





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