PSA GEN4 10.5" 9mm 1/10 Nitride 9" Lightweight M-LOK Railed MOE SBA3 Pistol KIT
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Palmetto State Armory
Overview
The PSA Gen4 10.5" 9mm Upper Receiver is a complete assembly designed for the AR-15 platform, featuring a 10.5-inch barrel with a 1:10 twist rate. This configuration is optimized for 9mm ammunition, providing reliable performance and accuracy in a compact format, ideal for both close-quarters engagements and recreational shooting. Builders often utilize this upper in pistol builds that prioritize maneuverability and lightweight handling.
Specifications
PSA GEN4 10.5" 9mm 1/10 Nitride 9" Lightweight M-LOK Railed MOE SBA3 Pistol KIT
Available Merchants(1)
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Price Alert
Build history on GunPartPicker
Builders on GunPartPicker first added the PSA GEN4 10.5" 9mm 1/10 Nitride 9" Lightweight M-LOK Railed MOE SBA3 Pistol KIT to a build in April 2026.
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today the one retailer we track has it in stock. Prices barely moved in September 2026, holding around $469.99, so there haven't been real sales lately. Buying today, the lowest price is $469.99 at Palmetto State Armory, which matches the best price we saw in September.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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