PAO SLX MD-21 MICRODOT 21MM 2 MOA 17 Rounds This lower parts kit does

This lower parts kit does not include the fire control group

Some things never change

Compatibility Wide compatibility with most 'STANAG 4179' platforms such as the AR15/M4

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56mm and 300 Blackout rounds is the most notable enhancement while maintaining the same size as industry-standard 30-round magazines

PAO SLX MD-21 MICRODOT 21MM 2 MOA 17 Rounds This lower parts kit doesThe SLx MD 21 is an advanced micro dot sight that incorporates the latest technologies and materials to deliver exceptional CQB performance. Weighing only 5 ounces, the SLx MD 21 is both lightweight and rugged, with upgraded mounting hardware for guaranteed rigidity and precision when you need it most. If you are looking for a taller mount, check out the SLx 2. 26" Mount for use with night vision or to achieve a more heads up shooting position. The