I got the insert in while I was gone over the weekend. Initially it looks good, smooth function. I'll try and test it out this weekend.

Not to disagree with you Hoser, but the CMMG pamphlet that I received with the insert states that to clean the bore after shooting .22LR, fire a rifle round to clear the leading, then clean like normal for an AR.

Never done it myself, don't know if it would affect pressure or not.

-myers