|
||||||||||||||||||||||||||||||||||||||
Yeap,there are several one piece type rings floating around and the quality varies depending on source.
Ive purchased the one piece rings from G&R,Armalite and DPMS and used them in various Armalite,LMT and DD BCG's over the past few years. No problems,and like IG I have yet seen the need to replace any Ive installed.
From my understanding Armalite holds,or did at one time in most recent past,the patent on the McFarland,and they specify the dimension on the product they sell for the M15 and AR10 series.
More info on the subject:
https://www.m4carbine.net/showpost.p...&postcount=103
Last edited by Blankwaffe; 09-19-13 at 17:12. Reason: ETA
Glock Certified Armorer
Armed Protective Services II
I've found that the finish inside the carrier has a lot to do with longevity of the gas rings, and of course the clean and lube cycle they receive. Shortest life was an Armalite carrier with a definate need to replace at 1,500 rounds. Longest so far is a Colt light weight or halfmoon carrier going strong at 4,000 rounds.
Regarding MacFarlands, I am pro the one piece, and have experienced no difficulties.
However, regarding the quoted experience above; This proves the need to verify even the simplest changes when servicing a weapon. That rifle SHOULD have run perfect with just a ring job. I also feel firing a few more rounds should have worked it in.
My 2 centavos
I had a Noveske that was fine at 4,000 rounds. One of my friends has changed barrels (tens of thousands) before changing gas-rings. From what I understand, their wear is over-hyped on the internet.
Service life of gas rings depends on the surface finish of the tunnel in which they ride. In short, service life of gas rings depends on the carrier, and for each carrier, the rule is simple; They last as long as they last.
If your carrier "eats" rings in 1,500 rounds, changing brands or designs won't change that. changing loads won't change that. Only a different carrier will change it.
Gas rings; a buck each. A new carrier, which may or may not be better/easier on rings? $50 to $150. You'd have to eat up a sixteen sets of gas rings to equal the lowest-cost carrier, which at 1,500 rounds each is 24,000 rounds.
Short answer; there are better things in life to worry about.
Before each shooting session I squirt several drops of Breakfree LP into the gas exhaust ports. I figure it's cheap insurance for gas-ring life.
Owner/Instructor at Semper Paratus Arms
Facebook: https://www.facebook.com/SemperParatusArms/
Semper Paratus Arms AR15 Armorer Course http://www.semperparatusarms.com/cou...-registration/
M4C Misc. Training and Course Announcements- http://www.m4carbine.net/forumdisplay.php?f=141
Master Armorer/R&D at SIONICS Weapon Systems- http://sionicsweaponsystems.com
Bookmarks