The 551 handguard cap allows the use of original Swiss SIG 551 handguards on the SIG 556 pistol or SBR.
Material: 6061-T6511
Coating: Type III Hard Coat Black Anodize
Fabrication: CNC machined
Includes installation instructions.
Installation requires removal of factory gas block.
We also offer the service of cutting down your customer supplied 551 handguard to fit your 556 Pistol or 556 SBR.
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