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Another good project to share with you guys!
Customer brought in a Remington 700 in 5.56, and an Allen Engineering AEM5. The AEM5 is a suppressor designed to fit over the barrel of a rifle, interfacing with a taper approximately 2.5" behind the muzzle. Pretty slick design. You get more rigidity than a traditional direct thread or QD mounts, the portion over the barrel serves to increase the volume of the expansion chamber, and you have get the extra volume without adding to the length of your rifle.
Normally the taper is added via a separate collar that is clamped onto the outside of the barrel, as seen on the MK12. In this case, we machined the outside of the barrel to have the taper integrated into the contour. The taper needs to be as close to 20 degrees as possible in order to ensure a proper gas seal and locating surface. This was accomplished using the CNC function on my lathe. After the program was written, and the barrel indicated in for runout, the barrel diameter was reduced to the required .85", and the 20 degree taper added.
After machining we got to test it out. It performed as it should. Alignment was great, and there was no gas visibly escaping from around the taper. This is a really cool system, and I am very likely going to be purchasing one of these cans and doing a similar setup sometime after the holidays. I love the aesthetic, and it is also very functional.
Customer brought in a Remington 700 in 5.56, and an Allen Engineering AEM5. The AEM5 is a suppressor designed to fit over the barrel of a rifle, interfacing with a taper approximately 2.5" behind the muzzle. Pretty slick design. You get more rigidity than a traditional direct thread or QD mounts, the portion over the barrel serves to increase the volume of the expansion chamber, and you have get the extra volume without adding to the length of your rifle.
Normally the taper is added via a separate collar that is clamped onto the outside of the barrel, as seen on the MK12. In this case, we machined the outside of the barrel to have the taper integrated into the contour. The taper needs to be as close to 20 degrees as possible in order to ensure a proper gas seal and locating surface. This was accomplished using the CNC function on my lathe. After the program was written, and the barrel indicated in for runout, the barrel diameter was reduced to the required .85", and the 20 degree taper added.
After machining we got to test it out. It performed as it should. Alignment was great, and there was no gas visibly escaping from around the taper. This is a really cool system, and I am very likely going to be purchasing one of these cans and doing a similar setup sometime after the holidays. I love the aesthetic, and it is also very functional.
