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M4 AR-15 Lower Receiver Spring Kit 20 Piece Gunsmith Box

$101.95
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SKU:
SI-AR-LRSK-PRO
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Package include:
- 20 x Bolt Catch Spring
- 20 x Buffer Retainer Spring
- 20 x Trigger Spring
- 20 x Hammer Spring
- 20 x Disconnector Spring
- 20 x Magazine Catch Spring
- 20 x Selector Spring
- 40 x Detent Spring

 
Features:
- Replace worn springs
- Commonly used springs
- Essential for a gunsmith or AR owner

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