Sons of Liberty Gun Works L89 AR-15 8.5 inch .300BLK Upper Receiver Group Medium Midlength 1-7 A2 Black
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Sons of Liberty Gun Works
Overview
The Sons of Liberty Gun Works L89 AR-15 Upper Receiver Group features an 8.5-inch barrel chambered in .300 Blackout, making it ideal for short-range engagements and versatility in ammunition selection. The mid-length gas system enhances reliability and reduces recoil, while the A2 receiver type provides a classic look and solid performance. This upper is commonly found in builds that prioritize the .300 Blackout caliber with a mid-length gas system, catering to shooters looking for compact yet effective setups.
Specifications
Sons of Liberty Gun Works L89 AR-15 8.5 inch .300BLK Upper Receiver Group Medium Midlength 1-7 A2 Black
Available Merchants(4)
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Build history on GunPartPicker
Builders on GunPartPicker first added the Sons of Liberty Gun Works L89 AR-15 8.5 inch .300BLK Upper Receiver Group Medium Midlength 1-7 A2 Black to a build in February 2026.
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, but today only Primary Arms has it in stock. Prices barely moved in September 2026, holding around $950, so there haven't been real sales lately. Buying today, the lowest price is $950 at Primary Arms, which matches the best price we saw in September.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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