BACKORDER: OMEGA Valve Mod. 1 for LEGACY (Gen. 1, Pre-Virtus, Keymod) MCX

Patent Pending

By making this purchase, you are agreeing to a BACKORDER. Please allow 6 weeks before reaching out regarding order status.

View data here. This table can serve simply to give you an idea of some potential starting points.

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These valves are only for use in the first generation (AKA "Legacy") MCX 5.56 barrels.

The OMEGA Valve is the first tunable gas valve for the Sig Sauer MCX. It is made from 17-4 stainless steel via additive DMLS manufacturing, and is coated in an advanced hexagonal boron nitride coating.

It does three things:

1. Instead of indexing on a ball detent within the gas block, it indexes on the gas valve retaining pin, allowing for four gas positions as opposed to the original two.
2. It utilizes extended gas flow paths to delay entry of the gas into the expansion chamber of the Valve, slowing down the cycling of the rifle.
3. It utilizes Parker Mountain Machine SCAR gas jet screws, allowing the user to vent excess gas out of the front of the OMEGA Valve. Also available are my own Micro Jet Screws to allow even finer tuning of your system!

When dialed in correctly, the OMEGA Valve will transform your experience with the Sig MCX. You will experience a softer recoil impulse, a less severe at-ear sound signature (when shooting with a silencer), and marginally reduced exposure to toxic gas, regardless of what ammunition and silencer you choose to use. Please note that the OMEGA Valve was designed to tune suppressed performance. Satisfactory results can be obtained in the unsuppressed state, but this was never the goal. Simply put: exceedingly under-powered ammunition may not function properly without the use of the silencer.

With your order, you will receive:

• (1) OMEGA Valve Mod. 1
• (1) Solid Set Screw (already installed)
• (1) 2.5mm wrench

This model was specifically designed to fit in the gas block of the first generation (aka "Legacy") 5.56 barrels. First-generation 300BLK barrels have been observed to be compatible with the Mod. 2 Series. See the FAQ for additional information regarding compatibility and adjustment.

Be advised: not all valves print equally, and some must be sanded and/or turned down to fit into spec and may have a more "polished" finish than others. 

Disclaimer: Sig Sauer® and MCX® are trademarks of Sig Sauer, Inc. J. Bennett Designs, LLC is not affiliated with or endorsed by Sig Sauer, Inc. OMEGA Valve is an independent product compatible with the Sig Sauer® MCX® platform.

We have data available to be viewed here.