Barrel Nut Assembly - Milspec

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:

• Original Colt-Take off Black Slip Ring - Used, Good condition, original black finish
  
• Original Colt-Take off Grey Slip Ring - Used, Good condition, original Grey finish
  
• Poor Finish Slip Ring - Original part - but poor exterior finish
  
• Black Reproduction Slip Ring - New part/finish.. reproduction so good it's hard to tell from the original
  
• Delta Ring - New, standard Delta Ring for all post 1980 models
  

Steel (Nut, Spring, Snap Ring)

Aluminum (Slip Ring, Delta Ring)

Made in the USA

Lifetime Guarantee

History:

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.