Just wanted to drop a line letting you guys know that all three sizes of the PK muzzle brakes are now in stock and ready for purchase. I installed two of the small 3 port PKs on a couple rifles this past week and was able to test them and was very happy. One was on a 257 Wby which had previously had a radial port muzzle brake similiar to a KDF installed. I shot the rifle before and after the installation of the PK and there was a dramatic difference in felt recoil even with the relatively mild recoiling 257 Wby chambering. The finish of that brake was polished to match the barrel finish and the pics I took did not come out well because of the glare so I decided to not post those pics. The other rifle was one of my custom 7mm Allen Magnums based on a Nesika Bay Model M receiver and a #5 contour Lilja barrel. This barrel is about perfect dimension for the small 3 port PK brake. Many have contacted me concerned about the size of the PK design and worried it would not look good on a lighter barrel. I wanted to post pics so that you all could see for yourself and decide what you think. This barrels has a muzzle diameter roughly 0.705" in diameter for a reference to the size of the brake. This pic gives a bit of perspective showing more of the barrel for comparision. In my opinion, not overly large at all. Finally a pic of the entire rifle for comparision. I was VERY happy with the brake on the 7mm AM, even in this relatively lightweight rifle. I only tested the new rifle at 500 yards but it was easy to see the impacts on my steel gongs even at that relatively close range. That is something I have not been able to do with other brake designs. Had to be 800 yards or out on this weight of rifle before I could see impacts, not anymore!!! All in all, I think I am more satisfied with this small PK brake then even the other two larger ones. Not because its more effective then the larger ones, just that it exceeded my expectations for this small brake. Wanted to design an aggressive recoil reduction system that was compact and eye appealing. I think this brake does that well. Here are a couple pics comparing it to the Holland QD brake with same 9/16" thread size. As you can see the PK is dramatically shorter then the Holland. In this pic you can see that the PK and Holland QD brake are the exact same width but the advantage of the slab style PK brake is that its ports are dramatically larger in surface area then the Holland for the same size width lending to its more aggressive recoil reduction. The top ports are slightly smaller then the Holland brake by design. For very lightweight rifles, I have often had the sensation that the barrel was being forced down by the holland brake. I wanted to control muzzle jump but not cause a negative jump problem, the smaller ports on the PK seem to serve their purpose extremely well. Neither the 257 or 7mm AM rifles did anything but sit rock solid and level when testing. Weight wise, many would say the PK will be much heavier then the Holland class brakes because its larger horizontal spread. That is not true, great care was taken to make this brake as light as possible while retaining proper strength. In fact, it weighs in at 1.95 oz and the Holland measured 2.02 oz on my scale. I am certainly not condeming the Holland brake in any way, its a great brake for sure. Its kind of the standard on lightweight, compact, highly efficent partition style muzzle brakes so it was a good choice for comparision purposes only, not to detract from its quality.