Carbon Fiber Nylon SA Polymer MDT 308 +3 Extension

Add four rounds of capacity to your SA Polymer MDT 308 magazine with the MK Machining Carbon Fiber Nylon SA Polymer MDT 308 +3 extension.  Redesigned shape for increased strength and durability. Now printed from our tough Carbon Fiber Nylon Material. Easily installs in under a minute, simply remove baseplate and slide on extension. Proudly printed on top notch machines from our custom Carbon Fiber Nylon. Extremely lightweight, lifetime warranty, and made in the USA! Reuses stock spring and follower.  We were able to squeak in +4 with a bit of a thumb workout.

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