Moded .25 cal Marauder tuned by Travis Witney at ART

Just received my moded .25 cal Marauder from Travis over at ART and this thing is like a total different rifle now. Its now making just under 86fpe with 49gr slugs regulated to 2500psi with a 4500psi 500cc carbon bottle and his drop down/block adapter. The moderator is from bwaltonpcp.net and it works amazing too. Its buttery smooth to cock now. Im super impressed with his work and service from comunnication to the delivery of the rifle. Recommend him to anybody that needs work done on their rifles. Thanx again Travis. Keep up the good work
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Ackuric im not sure about the OAL i put a 19 or 19 1/2" shroud on it to make it shorter when i put the mod on it. And yes im trying to figure something out with the stock but dont wanna pay an arm and a leg for it since its for hunting only. Any advices are welcome. The balance is pretty gd for me and the porting i dont remember what he told me.