
Diamondback DB1731B001 DB15 300 Blackout 30+1 16″ Nitride Treated Heavy Barrel w/DBSB-IV Flash Hider, A3 Flattop Upper/Diamondback Black Gold Lower, 15″ M-LOK Handguard, Magpul CTR Stock & K2 Grip
May 5, 2026
Henry Big Boy Classic Steel Rifle .327 Fed Mag 10rd Capacity 20″ Barrel Walnut
May 5, 2026DD M4A1 FSP UPR RCVR 14.5 PW 556 FDE
$1,551.00
DD M4A1 FSP UPR RCVR 14.5 PW 556 FDE
1 in stock
This Daniel Defense M4A1 FSP AR15 style Upper Receiver Group was built for customers wanting a firearm inspired by USSOCOM SOPMOD Block II. This upper features the M4A1 FSP RIS II picatinny quad rail in Flat Dark Earth, a 14.5″ M4 profile barrel, Mil-Spec F-Marked front sight base, Surefire SF3P flash hider / suppressor adapter, A1.5 Fixed Rear Sight, M16 profile full auto bolt carrier group, and Rail Mounted QD Swivel Attachment Point with QD swivel.
| UPC | 818773021869 |
|---|---|
| Manufacturer | Daniel Defense |
| Manufacturer Part Number | 23-004-09376 |
| Barrel Length | 14.5" Pinned (16" OAL) |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Model | M4A1 |
| Product Type | Upper |
| Shipping Weight | 6.1 |







