B&T USA APC9 MP5 Lower Trigger Group Alloy – APC9/APC45

The B&T USA APC9 MP5 Lower Trigger Group Alloy replaces the standard lower assembly with a precision-machined unit that accepts HK MP5-pattern trigger packs. This factory B&T component allows shooters to swap in aftermarket MP5 trigger groups for a customized trigger feel or to maintain compatibility with existing parts inventories. It's designed for those who want the versatility of the MP5 trigger ecosystem in their B&T platform.

Constructed from lightweight alloy with a durable finish, this lower trigger housing is factory-spec and built to B&T's Swiss engineering standards. Installation requires basic armorer-level disassembly of the APC lower receiver—no permanent modification to the firearm. Compatible with most standard MP5 trigger packs; verify fitment with specific aftermarket components before installation.

• Part Type: Lower Trigger Housing
• Compatible Firearms: B&T APC9, APC45
• Material: Alloy
• Finish: Factory Standard
• Installation: Armorer-Level Recommended
• Includes: Lower Trigger Group Housing (trigger pack sold separately)