SLR Glock Gen 4 G21 Magwell

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Glock Gen 3 / Gen 4 G20 / 21 Magwell Adapter

- 7075 Billet Aluminum

- Includes ultra low-profile billet attachment screw

- Made to fit each gen and model like a glove. No "one size fits all" like many out there

- Includes relief for Taran Tactical pin

- Will work with 10-round mags (for states with capacity restrictions)

- Will not work with back straps