M4A1 FSP UPPER, 14.5" PINNED

Daniel Defenses M4A1 FSP Upper Receiver Group was inspired by the USSOCOM SOPMOD Block II, and comes packed with Daniel Defense exclusive features. The upper receiver is MIL-SPEC with indexing marks and M4 feed ramps, and is constructed from CNC Machined 7075-T6 aluminum. The Barrel is cold hammer forged and is chrome lined, while the Gas System is carbine length and is direct impingement. The barrel also features SureFires SF3P Flash Hider: an advanced muzzle device that can reduce muzzle flash by an astounding 99% and also serves as a rock solid mounting adapter for SureFires SOCOM Fast Attach Suppressors.

Other features include a Bolt Carrier Group with chrome lining and an M16 profile, and a Daniel Defense M4A1 FSP Rail Interface handguard with four picatinny rails in the 12 oclock, 3 oclock, 6 oclock, and 9 oclock positions.

Key Features:

• SKU-specific configuration listed as: M4A1 FSP UPPER, 14.5" PINNED
• Quad-rail handguard
• SureFire SF3P Flash Hider
• Daniel Defense M4A1 FSP Rail Interface handguard
• Best suited for rifle upgrades and builds where fitment with the host firearm is confirmed