ASK AN EXPERTDescription
- Mil-Spec M4 Barrel Extension with 5.3.1.2 MIL-STD-171 Phosphate Finish
- 1.2.2.2 MIL-STD-171 Hard Chrome Chamber
- All Chambers are Individually Checked for Head Spacing Before and After Plating
- All Barrels are Individually High Pressure Tested (HPT) and then Individually Magnetic Particle Inspected (MPI)
- 5.3.1.2 MIL-STD-171 Phosphate Finish on the Barrel Exterior
- Threads are Cut Concentric to the Bore
- Spike's Lifetime Warranty
Spikes Tactical 16" Barrel, 5.56, 1:7 Twist, 1/2x28 Thread Pitch (SB51605-M4)
Barrel Steel is Certified MIL-B-11595E Chromoly Vanadium Alloy and Magnetic Particle Inspected they are also stress relieved.
Warranty Information
| Length, in. | 16" |
| Twist Rate | 1:7 |
| Caliber | 5.56 |
| Fit | AR-15 |
| Thread | 1/2x28 |
| Gas Block | 0.750" |
| Weight, oz | 28 |
