CA Compliance:
California compliance
- Status: Legal to own in California as the manufacturer builds it.
- Configuration: Factory. Nothing is modified. We inspect every rifle before it ships to confirm it matches this listing.
- Learn more: How fixed-magazine rifles work · How featureless rifles work · Why some rifles can only be built one way
About this rifle
Sig Sauer FACTORY REBURBISHED Sig Sauer MCX-Regulator is a semi-automatic rifle chambered in .223/5.56 with a 16" barrel and a 10-round capacity. Finish: FDE. The California configuration for this model is described above.
Manufacturer details
**** Factory Refurbished with Full Factory Warranty ****
The SIG MCX-R Regulator is the newest member of Sig's MCX family. Equipped with an Aluminum frame, it is finished in Gen2 NiR FDE Cerakote. Additional features include a 16 inch, cold hammer forged carbon steel barrel, a Magpul SGA Stock and fully ambidextrous Mag Release, Safety Selector and Bolt Catch. Sig offers this new MCX-R Regulator Rifle in 5.56NATO. A SIG designed 2-port Compensating Muzzle Brake on the 5.56 models is accompanied by a Receiver Integrated ARCA Rail, with a lower receiver that is compatible with all MCX Uppers.
- Fully Ambidextrous Mag Release, Safety Selector, and Bolt Catch
- SIG Designed 2-Port Compensating Muzzle Brake
- Proprietary SIG 2-Stage Match Trigger
- Receiver Integrated ARCA Rail
- Magpul SGA590 Stock
- Lower Receiver Compatible with All MCX Upper Receivers
Specifications
- Brand: Sig Sauer
- Caliber: .223/5.56
- Action: Semi-Automatic
- Capacity: 10
- Barrel: 16 in
- Finish / color: FDE
- California compliance: Factory Compliant
- Manufacturer part #: RMCXR-556N-16B
Buying from WBT Guns
- Delivery: Free pickup at our La Mesa store with no transfer fee, or shipment to any California gun store you choose. Select your FFL at checkout.
- Compliance guarantee: Every firearm leaves our shop in the configuration described on this page, function-checked by our compliance team.
- Payment: Pay in full, put 50% down with the balance due in 14 days, or finance with Credova.
- Paperwork: Firearm Safety Certificate, DROS and California's 10-day waiting period apply. We handle each step with you at pickup.
- Questions: Call (619) 667-9453 or email sales@wbtguns.com. FAQ · California Rifle Compliance Guide
WBT Guns is family-owned in La Mesa, California, and has configured firearms for California buyers since 2012.
A note on accuracy. We work hard to keep every listing correct, but specifications, images and compliance details come from many sources and can contain errors or change without notice. Images may show a configuration that is not California-legal. If a detail on this page matters to your decision, call us and we will confirm it against the actual firearm before you order. The compliance information here is general in nature and is not legal advice; California and local laws change, and the configuration described is confirmed at the time of sale. All sales are subject to applicable federal, state and local law and to the buyer's eligibility to purchase.
