

This is problematic for suppressors as they create a lot of back pressure. Rightly so, as they are slowing down the gasses leaving the barrel, which in turn suppresses the report of the round being fired. When properly adjusted, the M1A rifle can reliably run a full-size sound suppressor. Now that we know our two hurdles, we can talk about the items I used to get this beast purring. The task of attaching the actual suppressor to the M1A was made quite simple by the fantastic people over at Delta P Design. They have created an extremely high-quality muzzle adapter for the family of M1A rifles. The Delta P Design muzzle adaptor allows you to thread on an appropriately sized suppressor. Their M1A SOCOM muzzle thread adapter uses two separate components and registers directly onto the barrel threads and thread shoulder, thus ensuring proper alignment. Once installed and aligned, a set screw positively retains the adapter. They are made in the USA from hardened billet material and are the real deal in my opinion. On the range is where you discover if the system is reliable, if your impact point changed and how the additional weight may affect your stance. Now that we can physically attach our suppressor, let’s talk about adjusting the gas system so that the rifle cycles reliably. For this task, I went with the Schuster Manufacturing SOCOM adjustable M1A Gas System. This replaces the factory gas plug, allowing the user to fine-tune the amount of pressure in your SOCOM M1A’s gas system. This is essential for suppressing the M1A. Installing these items was an absolute breeze, and now we were ready to get to testing.
