NBS AR-15/M16 Helical Gas Ring
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NBS AR-15/M16 Helical Gas Ring

Original price was: $2.95.Current price is: $1.41.

SKU: 6301 Category:

Description

Single spiral of spring steel loops around the bolt three times and leaves no path for gas leakage. Replaces conventional three-piece “piston ring”-style sets that can accidentally line up, causing a major leak from the gas expansion chamber in the carrier.

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