Description

Hydra-Matic Div – M16A1 Semi Lower Parts Kit – Parkerized – Made in USA

SELECTORS INBOUND! Restock coming Monday/Tuesday 12/1 - New price is $10.00 cheaper than before

Built for purists. This is a premium, historically accurate M16A1 semi-auto lower parts kit using genuine USGI components and top-grade subcontracted reproductions. We make our own black and grey buttons/trigger guards anodized with our lowers to match. Everything is built from a handful of USGI subcontractors.

Key Features:

Authentic USGI Parts mixed with new, USGI-grade investment cast parts from the same subcontractors (“the Pony”) used.
M16A1 Selectors: We have new M16A1 Selectors made by an old gov contractor, we have been waiting on these for over a year. They are medium grey parkerized and will be a hair lighter than the pins/bolt catch.
Hydramatic/HR Bolt Catches in stock and an optional choice
Trigger: USGI-style semi-auto Schmid trigger, precision-ground sear surface — same trigger used by the Pony since the ’80s.
Finish:
- Steel parts are finished in GREY manganese phosphate (not nitride or black oxide).
- Trigger guard and mag release available in grey or black anodized — matched in-house to our lower receivers.
All steel components oiled for corrosion resistance. Degrease with acetone or brake cleaner for a classic grey finish.

Most modern LPKs (except AR15sport) include imported or incorrectly finished parts. Ours are as close to vintage USGI as it gets — no shortcuts taken.

Perfect for: