TacFire SS-RK556 5.56 NATO Complete Rifle Build Kit
Complete AR-15 rifle build kit featuring a 16" nitride 5.56 NATO barrel, free-float M-LOK handguard, billet upper receiver, and USA-made lower parts kit. Everything needed to assemble a modern sporting rifle.
TacFire SS-RK556 Complete Rifle Build Kit
The TacFire SS-RK556 is a comprehensive rifle build kit designed for shooters who want to assemble their own AR-15 platform rifle. This kit includes virtually all major components needed to create a functional, reliable 5.56 NATO rifle.
What's Included
Barrel & Muzzle Device
- 16" 5.56 NATO M4 contour barrel with nitride finish for enhanced durability
- Birdcage flash hider with crush washer for muzzle control
Upper Receiver Assembly
- AR-15 5.56/.223/.300 AAC stripped billet upper receiver
- M4 feed ramps for reliable feeding
- Mil-Spec charging handle with steel latch
- Dust cover for protection
- Forward assist for positive bolt closure
Handguard & Accessories
- 15" M-LOK free-float handguard for accessory mounting flexibility
- Standard receiver end plate
- Mil-Spec/commercial castle nut in steel
Lower Receiver Components
- USA-made lower parts kit with all necessary springs, pins, and detents
- Aluminum buffer tube
- 3 oz buffer with tube spring
- A2-style black pistol grip
Why Choose This Kit
This build kit offers excellent value for shooters looking to customize their rifle. The free-float handguard provides improved accuracy potential, while the nitride-finished barrel ensures long service life. All components are standard AR-15 compatible, allowing for future upgrades and modifications.
Note: You will need a lower receiver (which requires an FFL transfer) to complete this build.
