[interceptor]

Cycling: You have a few things you can try.

One, are you using a carbine or rifle length receiver extension tube? If a rifle length they you could try a carbine spring with your rifle buffer.

Two, if a carbine system then you might remove a coil at a time.

Three, reduce the weight in your buffer. (to get my rifle length to cycle properly I pulled the weights and replaced with aluminunm total buffer weight of 88 grams)

Four, pull the gas block and enlarge the port one number size drill at a time and replace with an adjustable block.

Five, you ain't gonna like this one, have a smith turn your carbine barrel port into a pistol length port. (more dwell time)

Six, try a different load. For instance, I'm using 11.8g AA1680 with 220g SMK.


These are a few options off the top of my head, none are guaranteed and use at your own risk. I did get my 16" carbine barrel (+ can) to cycle with subs by using a carbine spring and a reduced weight buffer. These are easy mods, and non permanent too. If you want to pursue the lightweight buffer thing, then a trip to your local hardware store for some 0.5" solid alum rod will get you started. IIRC, cut length was 4.625" for me.