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Sons of Liberty Gun Works .875 gas Block
Designed to ride against the Barrel Shoulder without a gap.
Made of heat treated 4140 Steel
Includes Knurled Head Set Screws
UPPER PARTS KIT WITH KNURLED ROD (FORGED UPPERS ONLY)
M4 MID PLASTIC HANDGUARD
FORWARD ASSIST BUTTON
FORWARD ASSIST KIT REBELLIOUS STRIPES
FRONT SIGHT POST FSB A2
GAS BLOCK SCREWS 2 CT
FORWARD ASSIST ROLL PIN
FRONT SIGHT SPRING M4
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