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My understanding is that Spike's Dynacomp is made from 303 stainless steel, a very ordinary alloy that can't be hardened and isn't especially strong. The Battlecomp (all versions), and the similar Griffin M4-SD, are both made from 17-4 PH stainless steel, one of the higher end, stronger, harder and wear-resistant stainless alloys, and the KAC Triple Tap that started the recent craze is made out of far more expensive still, stronger super-duper Inconel. I'm not an engineer, and I'm hoping one of the resident experts might chime in, but I'm wondering if the Spike's product will show erosion much sooner than the others.
What steel are the standard A2's made from? I have never seen one worn out.
No idea what an A2 is made out of, but I would guess a lot of flash hiders are made out of 4140 or 4150. But I think muzzle brakes of any flavor are subject to far more erosion than most flash hider designs. It also appears that plain 4140 is a considerably stronger and harder metal (even in the relatively low tempers) than 303 stainless, but I don't know how that translates into resistance to wear/erosion from hot gases. I welcome the experts to comment.
My guess is they use 303 because it is one of the best stainless steels available for machining. Spikes has significantly more machine work involved.
It's half the price of the Battlecomp and has a lifetime warranty. Battlecomps website is quite clear in that they offer no warranty of any kind on their product.
Since anyone installing any type of comp will likely never find themselves engaged in protracted firefights Im sure both products will last as long as the rifles.
to the OP i say get the longer version of the dynacomp, heres a pic of my 16" barrel with the fullsize comp. honestly you will not tell any difference in the extra length. so far this exact comp pictured has about 1500-2000rds through it and its doing great. it works effectively great for managing recoil but it does not in any way tame flash(and it does not claim to reduce/prevent flash) so prepare to be blinded when shooting indoors or at night. the battlecomp does a great job of managing recoil AND flash. im very happy with the ST product and have no doubts or regrets. if you have any questions please ask.
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