XMA+4 basepad for P365 xMacro

21+1 Rounds in your X-Macro!  Aluminum basepad for the factory SIG P365 xMacro 17 round magazine. Features: 6061 Aluminum  Type 3 Hard coat Anodized (FDE: Cerakote) Strip Stripe Ledge for easy extraction  Tapered edge to fit frames with magwell USPSA CO Legal Made in America Fit: Only fits Sig 17 round mags Sig Sauer xMacro frame with or without Tac Ops magwell, or our EMP-XM magwell flare, Legion AXG Frame, Raider365 Mischief Machine xMacro frame  Icarus Precision xMacro Frames, ACE Xmacro, and Air Polymer ShaloTek Flex, XR-17, XLR-17, XXLR-17 Fits all smaller frames but will leave a gap Radian Magwell - tight fit but fully function, may scratch base pad and magwell. IMPORTANT: Please measure your spring as referenced in the product pics. If your spring does not extend at least 1-1/4" past the magazine body when base is removed do not use that mag for the Plus 4 base pad. While we are unable to reproduce these issues in house we are working to better understand this but can only assume at this time that some Sig 17 round mags have springs that are too short. If you find this to be you issue or the slide will not lock back on empty grab an extra power spring here: LINK Install: Note: Gun, ammo, and magazine not included.