Build your upper with precision and confidence. Our Upper Receiver Assembly Service ensures your components are properly fitted, torqued, and aligned for maximum reliability, accuracy, and performance—whether it’s a duty rifle, range blaster, or precision build.
Includes:
Complete assembly of your upper receiver with your supplied parts
Barrel installation with proper torque and indexing
Gas block and gas tube alignment and pinning (if applicable)
Muzzle device installation (timed and torqued)
Forward assist and ejection port cover installation
Free-float or drop-in handguard installation
Function check and visual inspection
Optional Add-Ons:
Pin & weld muzzle device
Optic or BUIS install and bore-sight
Custom tuning or component recommendations
Ideal for:
New builds and caliber swaps
Precision or suppressed setups
Anyone who wants peace of mind from a professional build
SPECIFICATIONS
Barcode / UPC :
UPPER ASSEMBLY
Information