TommyBuilt USA is an 07/SOT FFL specializing in Customization, Creation and Modification.

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UMP lower locking pin

Lower Locking Pin
Availability: Out of stock

Product Description
UMP lower locking pin, These are compatible with the TMP and UMP receiver, also needed for the USC with Fused rear conversion.
Additional Information
Frequently Bought Together



UMP Stock


TMP 45 Barreled upper


G36 Mag release

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