Black Fallout Lower Build Kit

This Kit includes the Rise Armament RA-140 SS Drop-in Trigger, NBS Anti-Walk Pin Set, Dirty Bird Industries’ Lower Parts Kit Minus FCG & Pistol Grip, Magpul MOE Pistol Grip and NBS Carbine Buffer / Receiver Extension Kit. We know most shooters prefer different types of stocks so instead of building that into the cost, we have not included it in the kit. You will need purchase your own stock.

Rise Armament RA-140 Super Sporting Drop-In Trigger

Also known as the Black Fallout, the RA-140 SST is a high-performing, cost-effective upgrade to replace mil-spec triggers.

• Single-stage trigger system
• 3.5-lb. pull weight
• Clean break with a short reset
• Black 8625 hardcoat anodized aluminum cassette
• Comfortable, rounded trigger
• Unit weight: 2.6 oz.
• Manufactured and assembled in our facility according to strict AS9100 aerospace requirements, which are more stringent than standard gun manufacturing requirements
• CNC machined from high-grade, heat-treated tool steel and aluminum
• Fits most .308 and .223 AR style platforms (Not for use in Sig MPX)
• Self-contained design makes it easy and quick to install with no fine-tuning needed
• Note: The set screw should not be tampered with. Any attempts to modify the trigger will void the warranty.
• U.S. Patent No. 7,293,385

NBS Anti-Walk Trigger Pin Set

The NBS Anti-Walk Trigger Pin Set is perfect for drop-in triggers or for those who want peace of mind knowing that their trigger pins won’t work their way loose, no matter what. Made in the USA
Lifetime Warranty

NBS Mil-Spec Carbine Buffer / Receiver Extension Kit

• Mil-Spec Carbine Buffer Tube / Receiver Extension
• American Made
• 6 Position
• 7075-T6 Aircraft Grade Aluminum
• Hard Anodized
• Carbine Buffer Spring
• Castle Nut/Receiver Nut
• Mil-Spec Receiver End Plate
• 3oz Carbine Recoil Buffer w/ Tungsten Steel Counter Weights
• Lifetime Warranty Provided by AR-15Discounts.com

Magpul MOE Pistol Grip

Dirty Bird Industries Lower Parts Kit minus Fire Control Group & Pistol Grip

Consists of quality, precision machined components made right here in the USA. Ideal for builders who want to source their own fire control group and grip, this LPK includes pins, springs and controls plus an extra takedown / pivot pin detent & spring set, and an upgraded enhanced polymer trigger guard.

Don’t risk out of spec or missing parts in your LPK, you have Dirty Bird’s word that these parts will be well within spec and include exactly the following parts: 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