The One Horse AR-15 Complete Lower Parts Kit brings together every essential small part you need to finish a mil-spec AR-15 lower receiver. From the phosphate-coated single-stage trigger to the A2-style pistol grip and all the pins, springs, and detents in between, this kit is engineered for straightforward assembly and dependable function. Each component is precision-machined for drop-in compatibility with standard AR-15 lowers, making it a practical choice for new builds or refreshing a well-used rifle.

This lower parts kit is ideal for builders who want a clean, reliable starting point without chasing individual components. It includes the full fire control group, controls, and hardware, but leaves buffer tube assemblies and stocks to your personal preference. Whether you are putting together a range rifle, a training carbine, or simply stocking spares, the consistent geometry and mil-spec dimensions help ensure smooth operation. One Horse focuses on solid, no-nonsense parts that support repeatable performance and straightforward assembly.

Key Features:

• Manufacturer: One Horse
• Model: AR-15 Complete Lower Parts Kit
• Type: Complete Lower Parts Kit (minus buffer tube assembly and stock)
• Platform: AR-15 Mil-Spec Lower Receivers
• Trigger Type: Single-Stage Mil-Spec
• Trigger Pull Weight: 5.5–7 Lbs
• Trigger Finish: Phosphate Coated
• Compatibility: Drop-In With Mil-Spec AR-15 Lower Receivers
• Included Components: Fire Control Group, A2-Style Pistol Grip, Pins, Springs, Detents, And Controls