“I tried swapping barrels on my M&P 10 and found Smith and Wesson uses proprietary bolts and barrels. Having had experiaenxe with a Toolcraft 6.8 BCG I did not hessitate to order a Toolcraft .308. I was a little nervous, worrying that S&W also had a proprietary upper, but the BCG slid right in like a precision instrument. With a lifetime warrenty how can you go wrong. Jeff”
“this is a beautifully machined BCG no tool marks or burrs anywhere. the gas key has some of the best staking I have seen. all four of the stakes touch the grade 8 bolts as they should. the nitride finish is perfect and very well applied. I just wish I would have bought a spare but I will in the future.”
