|
I also am determined to assemble/purchase a .300/221 SBR upper that is 10.5" in length & will cycle both sub&supersonic with & without a suppressor,& with no adjustable gas block or gas tube.Has anyone been able to achieve this? So far, I have a Model 1 Sales 16" barrel that will not chamber standard Whisper lengths. I plan to block the carbine port,& make another port @ the pistol position.
From everything I've read,there is no magic gas port size that will do all of the above mentioned without the assistance of adjustable gas components.
Since the M1S barrel was inexpensive,and seems to have chambering issues, I am going to try to make this work before consulting the high-end gurus.
|