Daniel Defense M4A1 RIII Upper Receiver Group 14.5"

The M4A1 RIII Upper Receiver Group is Daniel Defense's flagship 14.5" offering, combining their proven M4A1 barrel profile with the new RIS III M-LOK handguard system. The 14.5" cold hammer forged barrel features a pinned and welded extended flash suppressor to achieve 16" overall barrel length for non-NFA compliance, making this an ideal choice for rifle builds without SBR registration.

The mid-length gas system provides smooth, reliable cycling with reduced felt recoil compared to carbine-length systems, while also extending component life. The RIS III 12.5" handguard offers generous rail real estate for lights, lasers, and accessories through its M-LOK attachment points, while the full-length Picatinny top rail accommodates any optic mounting solution.

This complete upper receiver group includes Daniel Defense's M16 profile bolt carrier group (MPI tested with properly staked gas key) and the GRIP-N-RIP ambidextrous charging handle. Every component meets Daniel Defense's exacting quality standards, backed by their lifetime warranty.