vt hunter..they might seem expensive for a good one but look at the price of a GOOD bolt gun. they will even out pretty close id say. when building them you can save some money. buy the upper and lower seperatly. weve built guns that sell for over 1000$ for 600-800$ but all ours were in .223 so the diffrent calibers may be diffrently priced since .223 supplies are more common. id love to have an M4 ar-10 in 308. i just like big talkers over a .223. just me though. we cant use them to hunt in our state so we just use them for fun.