Product Description
Colt SP401731 9mm stripped upper receiver and barrel assembly in RO991-9A style. This is a factory Colt 9mm upper configured for AR-15/SMG platforms with a 9" barrel.
Features:
- Part Number: SP401731
- 9" barrel, 9mm
- RO991-9A style configuration
- Stripped upper receiver (no bolt carrier group, no charging handle)
- Direct-blowback 9mm configuration
- Compatible with standard AR-15 lowers when used with a 9mm magazine adapter or dedicated 9mm lower
Notes:
-
- Sold as stripped upper only — bolt carrier group and charging handle are not included
- Ideal for building a Colt-style 9mm AR/SMG
Product Videos
Custom Field
Caliber 9mm
Barrel Length 9"
