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9/29/2008 12:51:10 PM EDT
What's the difference between a delta ring and a flat delta ring?  These are listed options for purchasing barrels at CMMG, don't know the difference.  TIA.
9/29/2008 1:06:01 PM EDT
[#1]
The flat 'slip ring' was used in the older rifles, prior to the introduction of the tapered 'delta ring'.

If you're building a retro use the flat slip ring.

If you're buiding something newer (M16A2 or newer) then use the delta ring.

The delta ring is much easier to pull back on than the slip ring.
9/29/2008 3:05:18 PM EDT
[#2]
Ekie's photos from the retro forum

flat


tapered
8/11/2009 3:02:06 PM EDT
[#3]
Any idea where to acquire one of these flat ring assemblies?

With a little searching I found CMMG has them for just under $20 new...but used is fine too.

Just managed to score me a Vietnam era used ring on gunbroker
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