PSA 18" Mid-Length 6.8 SPC II 1/11 Stainless Steel 15" Lightweight Hex M-LOK Upper with BCG & CH
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Palmetto State Armory
Overview
The PSA 18" Mid-Length 6.8 SPC II upper receiver is a complete assembly designed for AR-15 platforms, featuring an 18-inch barrel with a mid-length gas system. The 1:11 twist rate is optimized for stabilizing heavier projectiles, making it an excellent choice for builders looking to utilize the 6.8 SPC II caliber for enhanced terminal ballistics. This upper is commonly found in builds that prioritize accuracy and performance in the 6.8 SPC II range.
Specifications
PSA 18" Mid-Length 6.8 SPC II 1/11 Stainless Steel 15" Lightweight Hex M-LOK Upper with BCG & CH
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Build history on GunPartPicker
Builders on GunPartPicker first added the PSA 18" Mid-Length 6.8 SPC II 1/11 Stainless Steel 15" Lightweight Hex M-LOK Upper with BCG & CH to a build in February 2026.
Updated · from real builds on GunPartPicker
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