Op-rod Spring Guide Improves Accuracy?

MJL

MJL

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At the M-14 clinic in Barrie on the weekend, Hungry noted that replacing the Norc op-rod spring guide with the Marstar version was one way of improving accuracy.

Not that I doubt anything you taught us Hungry :D, but I stared at the action and I am not really certain how or why that would work.

Could you enlighten us with your analysis ?

Thanks !!

PS: For anyone who is interested, Marstar will have new stock on the op-rod spring guides in 3 weeks. My order is already in ;)
 
I just installed mine on monday. It seems to take less effort to cycle the action now that the spring is in a perfectly straight line. Dunno the theory as to why it improves the accuracy.
 
I was at Hungry's Edm course...correct me if I'm wrong but I think he said that a spring compresses and releases more evenly on a concentric shaped guide than on a stock bar style guide. I thought he said the spring "serpentined" on the stock guide and the movement was not smooth and crisp as it would be with the Marstar concentric shaped unit...Hungry will read this and either agree and/or clarify...or beat on me for not listening in class LOL!
M

Hungry here: Glad that someone was paying attention. Yes, it's all about the 'consistent return to battery' of the gas gun. With the stamped flat op rod guide, you will all notice how the op rod spring likes to compress up into a serpentine pattern, this can (you can argue this all day) result in some unpredictable patterns, unlike the straight, linear, repeatable pattern of a cylindrical guide. I did some experimenting at 200yds (Range 4 at Sharon GC) back in 1988 with both op rod guides and that's how/why I'm confident to tell all of you that the NM op rod guide will result in smaller groups. Now for you 1911 fans, same principle applies for the FLGR (full length guide rod) but in a much smaller scale. Or we could apply to this principle to my Glock 17 that Greentips shoots a shztload better than I can. How embarrassing....... :D
 
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Beat you??? Hell, I was there too and can't remember squat what he said about why it improves accuracy. If hes gonna beat anyone, he'll bean me with the butt of my own gun.
Makes sence about the serpentining effect. My sring is arrow straight now.
 
You need a spring guide otherwise your d*ck might fall off. LOL
Oh that was hungry's line.
The cylindrical spring guide keeps the spring aligned and consistent, and consistency=accuracy. When a shot is fired there is vibrations and barrel whip, you want the barrel to be consistent from shot to shot when the bullet exits the barrel.
 
the recoil spring made by Wolfe is excellent as well. I find it easier to come by than a genuine usgi one anyhow. Alberta tactical rifle had them a while back but i'm sure they would be easily ordered from the u.s. ...... it's just a spring.
 
Look at your present spring guide notice how you can move it side to side so every time you shoot the guide can be moving side to side, each time that changes the cycling slightly. It is all about repeatability in your shots, tightening things up and smoothing things out will create consistency ergo accuracy.
 
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I use Sadlak and will soon have a new spring guide from SEI.
They do keep the spring perfectly aligned and the action feels
smoother, but I can't say they do anything to enhance accuracy.
 
hey nutters,

i am looking for this type of guide, unfortunately at the moment Marstar is out of them, does anyone have a spare to sell, or at least point me in the right direction to another supplier.

thanks,

cheers & beers

~harry~
 
you could always get the sadlak guide from fabsports.ca
its a bit more expensive, they offer a "discount" on a matching spring if you buy both products
 
Sadlak is larger in diameter to fit GI or US style springs. The Marstar version is slightly narrower and fits chinese springs...and obviously US springs.
 
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