RAIL SYSTEM

Rail system

FAB Defense NFR EX Quad Rail – Rail System for M4 / M16

The FAB Defense NFR EX Quad Rail is an aluminum four‑rail handguard system designed as a replacement for the standard handguard on M4 / M16 rifles. It enhances overall tactical performance, improves ventilation, and significantly increases weapon versatility.

Technical specifications:

• Weight: 297 g

• Width: 55 mm

• Height: 60 mm

• Length: 177 mm

Features & advantages:

• Four MIL‑STD‑1913 Picatinny rails for versatile accessory mounting

• Precision CNC‑machined from 6061‑T6 billet aluminum for maximum durability

• Extremely robust construction – will not bend or deform under any conditions

• Field‑tested in extreme environments for superior performance and reliability

• Integrated ambidextrous QD sling swivel mounts (front and rear)

• Hard‑anodized finish for enhanced wear resistance

• Easy installation – replaces the standard handguard

• Secured with four screws

• Anti‑rotation locking latches ensure a perfect and secure fit

• No armorer required

Compatibility:

• M16 carbine variants without gas block

• compatible with multiple length configurations