Spike's Tactical "The Jack" ar15 lower receiver
Spikes Tactical STLB520 The Jack AR-15 Lower Receiver 5.56mm Black
Spike's Tactical is proud to release The Jack™ lower! Through the articulate work of Sharps Bros, they have developed the most detailed billet lower ever created.
- An oversized integral trigger guard
- A beveled magazine flare that helps you load as quickly and efficiently as possible
- Machined top to bottom from 7075-T6 aluminum, a peak-strength corrosion-resistant aluminum alloy
- A hard coat anodize finish per MIL-A-8625, the anodizing model for model for most military and aerospace products
- Full compatibility with all mil-spec internal parts
- Full compatibility with all other aftermarket mil-spec upper receivers
- Full compatibility with GI standard issue magazines as well as PMags
- Multi caliber mark
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