Thanks guy's for the link's. I'll get the one from numrich only because it has listed known measurments that will fit. It'll actually be long, but I can grind to fit

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As an exersize in humility,, I must tell ya I spent about an hour cruising both of those sites and couldn't find what I needed

. Now if'n they was parts for a trad Black Powder gun,,,it's actually been about 25 yrs since I picked up a centerfire and I'm re-learning the learning curve, but the boy is 16 now and it's my duty to introduce him to the modern stuff. Besides these thing's are kinda fun, all ya gotta do is open it up and plug one in and close it, plus ya still git to fiddle with and tune it, dial it in for that all critical "one shot".
p.s. I finally figured out that Ctrl F thing,, the info in the FAQ's is now much easier to find!