MIL-SPEC BARREL EXTENSION, 5.56 M4, NITRIDE
- Mil-Spec
- M4 feed ramps
- 86E20 aircraft-grade steel construction
- Carburized & hardened per mil-spec
- Nitrided
- Made in USA
Description
Description
Our barrel extensions are made from aircraft-grade 86E20, are precision machined, heat-treated, and ground to mil-spec. This version is nitride treated and has a deep black finish.
Features:
- Mil-Spec
- M4 feed ramps
- 86E20 aircraft-grade steel construction
- Carburized & hardened per mil-spec
- Nitrided
- Made in USA