Single‑stage military trigger; three‑round burst mechanism on A2/A4 models
Sights
Low‑profile flip‑up iron sights (front post, rear aperture) with full‑length Picatinny rail for optics
Standard: detachable carrying handle with integrated rear aperture (M16A1) or flat‑top receiver with Picatinny rail and removable iron sights (A4); front post fixed