You have gone out and procured a SigAir M17 because it's all the rage for the modern gunslinger. As far as the Optic design and Modular FCU goes, it's a real beckoning for customizations. You've already paid a premium for the Sig licensing but they did not include an optic plate... even better, they never made one for the system. You are now browsing online through the plethora of aftermarkets for the M17, specifically looking for an optic plate...
HEY HO and BELOW! You see that fancy new grip frame, adjustable straight triggers, threaded barrels and maybe even a new base plate...
You have now spent all your lunch moolah and are now a proud owner of a badly customized SIG P320! Congratulations...
or you could just pick up a STARK ARMS SA320
which is OEM'd by VFC, the exact same manufacturer as the SigAir M17! The best part is it comes with THREE-FRICKIN type of optic plates with the package! *ahem*
The SA320 comes in two option. The standard P320 with a Grey Grip and a 22rd Mag or the Tactical P320 with a Threaded barrel, a Black Grip and a Mag with an Extended Base that holds 26rds.

Both options comes with three adapter plates that are designed to fit the RMR, Romeo or ACRO optic footprint. This makes it extremely convenient for users to match the red dot sight according to their needs.

One of the most obvious and notable feature of the SA320 is the Wilson Combat Style Grip Frame. Crafted from high-strength polymer with precision-engineered angles and pronounced texturing, this grip significantly enhances shooter comfort and control when handling the SA320.

It also features a 1913-standard tactical rail, enabling effortless integration of tactical lights or infrared sights and further expanding its versatility in dynamic shooting scenarios. This is also quickly swappable with the 320's modular FCU system. The Internals are pretty much identical to the SigAirs and will feature a Steel Hammer, Roller and Sear!

The SA320s come with VFC's “Guide Hop” HOP System and Fixed Non-Dropping Outer Barrel. The fixed, non-drooping outer barrel design significantly enhances shooting accuracy and stability, ensuring superior fire control performance. The "tool-less" Guide Hop system makes it extremely easy to quickly adjust your hop whilst on the field.

Unlike it's M17 Counterpart, the P320 does not come with thumb safeties but it does still feature an ambidextrous slide release and Left / Right swappable Mag release. The SA320 models also come with a competitive grade Adjustable Trigger Travel Design. The adjustable trigger travel design allows users to fine-tune the trigger pull according to their personal shooting style, delivering enhanced precision and a smoother shooting experience.
If you are in a market for a New Airsoft Pistol or maybe something modular and highly customizable, I'd definitely recommend taking a look at the SA320s. If you are looking to pick up a SigAir M17 to modify or customize, I'd recommend to read my first paragraph again. Pick up a SA320...
