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56MM COLOR: Black RECEIVER: Super Duty Upper w/ cam Pin cut-out BOLT CARRIER GROUP: Nanoweapon® Reliability Enhanced BCG BOLT: Geissele Stressproof Bolt® with Asymmetric Cam Pin RAIL: 15" MK16 w/ Geissele Center Tab BARREL: 16" Geissele Barrel
Swivels not included
Compatibility: M-LOK™
and versatile configurations
Lower Parts Kit Standard With Grip Color:Tan 56MM COLOR: Black RECEIVER: SuperThe Geissele Ultra Duty Lower Parts Kit is made for the most demanding operators and includes all the internal parts necessary to complete or rebuild your lower receiver. Key components are made from Stainless Steel, which offers a much longer life span and a much lower chance of rusting or failing in extreme conditions or under heavy use. The Geissele Ultra Duty LPK includes our Maritime Bolt Catch, famous for its aggressive texturing and extended
