FN 15® / AR-15 Accessories
FN 15® M4 Upper Assembly
![](https://fnamerica.wpenginepowered.com/wp-content/uploads/2023/09/FN15_M4_Upper-Military-Collector_sideR_product-600x195.png)
Caliber: 5.56x45mm
Weight: 4.98 Lbs.
Barrel Length: 16"
Operation: DIRECT IMPINGEMENT CARBINE-LENGTH GAS SYSTEM
Twist Rate: 1:7 RH
FN 15® M16 Upper Assembly
![](https://fnamerica.wpenginepowered.com/wp-content/uploads/2023/09/FN15_M16-Upper-Military-Collector_sideR_product-600x180.png)
Caliber: 5.56x45mm
Weight: 5.61 Lbs.
Barrel Length: 20"
Operation: DIRECT IMPINGEMENT RIFLE LENGTH GAS SYSTEM
Twist Rate: 1:7 RH
FN 15® M4/M16 Stripped Lower
![](https://fnamerica.wpenginepowered.com/wp-content/uploads/2023/09/MilCol_lower_stripped_thumb_2_-600x202.png)
Caliber: 5.56x45mm
Weight: .55 Lbs.
Finish: Black Anodize
FN 15® DMR3 Upper Assembly
![](https://fnamerica.wpenginepowered.com/wp-content/uploads/2023/09/20-100749_FN_DMR3_UPPER_right-600x200.png)
Caliber: 5.56x45mm
Weight: 5.15 Lbs.
Barrel Length: 18"
Operation: DIRECT IMPINGEMENT RIFLE-LENGTH GAS SYSTEM
Twist Rate: 1:8 RH
FN 15® TAC3 Upper Assembly
![](https://fnamerica.wpenginepowered.com/wp-content/uploads/2023/09/20-100748_FN_TAC3_UPPER_right-600x200.png)
Caliber: 5.56x45mm
Weight: 4.35 Lbs.
Barrel Length: 16"
Operation: DIRECT IMPINGEMENT MID-LENGTH GAS SYSTEM
Twist Rate: 1:7 RH