New Mil Spec Barrel Nut Assembly - with choice of Slip Ring or Delta Ring.
All Four parts of the Assembly included:
- Barrel Nut
- Weld Spring
- Barrel Nut Snap Ring
- Slip Ring or Delta Ring available Options.
Notes on Options:
Steel (Nut, Spring, Snap Ring)
Aluminum (Slip Ring, Delta Ring)
Made in the USA
Colt used the Slip Ring designed by Armalite on all AR15 / M16 models up to the mid-1980's, when it was replaced by the Delta Ring on the M16A2 / M4 and all subsequent models since then. If building a Vietnam era Colt.. choose a Slip Ring. If building a M16A2, M4 or any model since then you want a Delta Ring.
* The actual date of Delta Ring use is quite controversial at the moment. In Larry Vickers book there is mention of the Delta Ring being tested during the Vietnam War - though we still remain convinced the Delta Ring was not used Military Wide until the introduction of the M16A2 in 1983.