Alpha AR-15 Lower Build Kit
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The Alpha Lower Build Kit is an awesome kit and includes everything you need to finish your lower receiver. It features the popular Alpha stock AND since you already know you’ll be replacing that standard A2 style grip, we’re throwing in the TF Slim DI grip. It is textured, it is rubberized and it looks great.
Surplus Mil-Spec Lower Parts Kit
The Surplus complete lower parts kit is a mil-spec or better LPK with well-machined components.
Country of origin: USA / Taiwan
These lower parts kits are sourced directly from factories that produce components for defense contracts and consumer weapons manufacturers. Our Taiwan source is an ITAR-exempt manufacturer that exports to manufacturers and defense agencies around the world including the United States, Australia, Canada, England, Germany, Indonesia, Mexico, New Zealand, South Africa, Switzerland, United Arab Emirates.
Technical Specs
- 31 piece set to complete a lower.
- Machined parts, no MIM.
- Hammer 8620 Steel
- Trigger 8620 Steel
- Disconnector 4340 Steel
- Trigger Pin 4140 Steel
- Bolt Catch 4340 Steel
- Polymer Pistol Grip
Trinity Force Alpha Mil-Spec Stock
- Quick Disconnect Swivel Attachment
- Durable Polymer Stock
Discount Buffer / Receiver Extension Kit
- Mil-Spec Carbine Buffer Tube / Receiver Extension
- 3oz Carbine Buffer
- Carbine Buffer Spring
-
Castle Nut/Receiver Nut
-
Mil-Spec Receiver End Plate
Trinity Force DI SLIM GRIP (BLACK)
The DI Slim Pistol Grip is double injected for improved comfort and traction. Designed for the AR platform, this grip provides a slightly reduced grip angle for improved weapon leverage in close to long range applications, and a more positive contact when firing. This grip is designed to be used with rifles that feature a medium-to-extended length of pull.
- Direct Replacement for AR-15/M4 pistol-grip
- One-piece reinforced polymer construction
- Beavertail backstrap for improved ergonomics
- Lifetime Manufacturer Warranty
| Weight | 7.264 oz |
|---|
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
Customer Reviews
- Reviews
- Questions
US
Alpha Ar15 lower build kit
Every part fit correctly, The parts were well finished ie, no burrs to remove.
US
Nice set for a beginner build
Great experience will be back
USGreat parts kit!
Overall it was great. I loved the quality and style and ease of using parts. While I needed to drill deeper for trigger mechanism to work properly. He was great the only thing I had issues with was pin used to hammer into side of 80%. If I had to do it again. I would drill that hole just slightly bigger so pin would still fit snuggly with out marring finish on your lower. It was not a good fit and either hole was too small or pin was too thick in width. Otherwise it was excellent and I will buy again. Thanks so much!
USAlpha ar-15 lower build kit
Very nice kit with good quality parts every thing you need to build lower in one kit was great
USPerfect
Fit and finish was excellent. All parts were fantastic!!
