By entering your mobile number above, you consent to receive Rainier Arms back-in-stock text notifications from 35657 to that number. Msg frequency may vary. Msg & data rates may apply. Reply HELP for help and STOP to cancel. See Terms and Conditions & Privacy Policy
Requested by customers to replace the molded plastic MCX mating block from the factory, we created the MCX Spring Plate. Fully machined from solid block 4140PH steel and Nextride coated, our newly created MCX Spring Plate is easy to install and ensures reliability for your rifle.
Review by Ezequiel P. on 10 Oct 2022review stating SIG MCX spring plate
Fit form and function is flawless. Shipping was fast. I can’t believe sig doesn’t send them from the factory with these on them. 10/10 would recommend to my friends.
Review by Daniel M. on 9 Jan 2019review stating Solid replacement
Disappointed that Sig shipped my MCX pistol with a plastic one that broke after 1000 rds, i wasn't going to make this a regular thing. Nice fit & finish and can see it lasting thousands of rounds in the future
Review by Nathaniel R. on 24 Oct 2017review stating Durable spring plate
This is for those of us who don’t feel 100% right about the plastic piece at the end of the MCX spring assembly. Easy to install. I have run about 300 rounds through the rifle without a hitch; time will tell how durable it really is. I’m confident it will hold up; it is solid and well made. Dependable shipping as always.
Review by Ezequiel P. on 10 Oct 2022review stating SIG MCX spring plate
Fit form and function is flawless. Shipping was fast. I can’t believe sig doesn’t send them from the factory with these on them. 10/10 would recommend to my friends.
Review by Daniel M. on 9 Jan 2019review stating Solid replacement
Disappointed that Sig shipped my MCX pistol with a plastic one that broke after 1000 rds, i wasn't going to make this a regular thing. Nice fit & finish and can see it lasting thousands of rounds in the future
Review by Nathaniel R. on 24 Oct 2017review stating Durable spring plate
This is for those of us who don’t feel 100% right about the plastic piece at the end of the MCX spring assembly. Easy to install. I have run about 300 rounds through the rifle without a hitch; time will tell how durable it really is. I’m confident it will hold up; it is solid and well made. Dependable shipping as always.