Description
Building a mil-spec AR-15 lower from a forged receiver means sourcing a lot of small parts that are easy to overlook until you’re mid-assembly and short one spring or detent. Wilson Combat’s Lower Receiver Parts Kit addresses that by bundling every component needed to complete a forged mil-spec lower in a single package. That includes the bolt catch assembly, magazine catch and button, pivot and takedown pins with their respective detents and springs, a right-hand semi-auto safety selector, an aluminum GI trigger guard with roll pin, trigger and hammer pins, and the buffer retainer with its spring — the pieces that are most often missing from stripped lowers or partial kits.
The semi-auto safety selector is worth noting for builders who intend to run a standard mil-spec fire control group: it is fitted and dimensioned to mil-spec geometry, so it indexes cleanly without the fitting work sometimes required with billet-specific components. The aluminum GI trigger guard keeps weight down and matches the profile of standard forged lowers without requiring modification. Because this kit is oriented around forged mil-spec lower receivers rather than billet designs, builders working with precision-machined billet lowers should verify compatibility with their specific receiver before ordering.
Every part in the kit ships ready to install, which matters when you want a build that goes together without surprises. For someone completing a first lower or stocking a spare parts supply for an existing rifle, this kit covers the components most likely to be lost, worn, or simply absent from a stripped receiver purchase.




