The factory Colt 901 magazine adapter block conversion kit allows you to install any mil-spec AR15/M4 upper receiver and use mil-spec AR15/M4 magazines with your Colt 901 lower receiver. Includes magazine adapter block, buffer and spring.
Colt 901 Magazine Adapter Block Conversion Kit
Colt 901 Magazine Adapter Block Conversion Kit
- SKU:
- SP99415
- Weight:
- 0.75 LBS
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