Daniel Defense M4A1 FSP 14.5" Upper Receiver, Flat Dark Earth
Daniel Defense M4A1 FSP complete upper receiver in 5.56 NATO with 14.5" pinned barrel, RIS II rail system, Surefire flash hider, and M16 bolt carrier group. Flat Dark Earth finish.
Fits: AR-15
Daniel Defense M4A1 FSP Upper Receiver Group
This is a complete, ready-to-mount upper receiver inspired by the USSOCOM SOPMOD Block II platform—a proven design refined through real-world military use.
Key Features
Barrel & Gas System
- 14.5" M4 profile barrel (pinned to achieve 16" overall length)
- Carbine-length gas system for reliable cycling
- M16 profile full-auto bolt carrier group
- Mil-Spec F-marked front sight base
Rail System & Accessories
- M4A1 FSP RIS II Picatinny quad rail in Flat Dark Earth
- Surefire SF3P flash hider with suppressor adapter capability
- A1.5 fixed rear sight
- Rail-mounted QD swivel attachment point with QD swivel included
Finish & Construction
- Anodized Flat Dark Earth and Black finish
- Mil-Spec construction throughout
What You Get
This upper receiver group arrives complete and ready to install on any compatible AR-15 lower receiver. The combination of the proven M4A1 FSP design, quality rail system, and Surefire flash hider makes this an excellent choice for shooters who want a versatile, combat-proven platform without compromise.
Features
- upper receiver: mil-spec with indexing marks and m4 feed ramps. cnc machined of 7075-t6 aluminum
- barrel: chrome moly vanadium steel, cold hammer forged, 1:7 twist, 14.5 m4 profile, chrome lined, mil-spec phosphate coated"
- gas system: mil-spec f-marked front sight base, carbine length, direct impingement
- muzzle device: surefire sf3p flash hider / suppressor adapter, black ionbond dlc coating, pinned and welded to barrel
- bolt carrier group: m16 profile, mil-spec mp tested, chrome lined, properly staked gas key
- sights: a1.5 fixed rear sight, 6061-t6 aluminum, type iii hard coat anodized
- handguard: daniel defense m4a1 fsp rail interface system (ris) ii, cnc machined of 6061-t6 aluminum, type iii hard coat anodized fde
