Build your custom AR pistol in 300 AAC Blackout with this 10.5” complete pistol kit. Ideal for close-range performance, suppressed shooting, or home defense, this upper delivers reliability and compatibility with all Mil-Spec AR-15 lower receivers. No FFL required – just finish your 80% lower and assemble.
Barrel: 10.5" 4150 CMV, mid-profile, pistol-length gas system, 1:7 twist, nitride finish
Threading: 5/8x24 with A2 flash hider installed
Gas Block: .750" low profile, paired with pistol gas tube
Upper Receiver: Forged 7075-T6, flat top M4 feed ramps, Type III hardcoat anodized
Handguard: 10" slim M-LOK free-float rail – aircraft-grade aluminum
BCG: M16 cut, MPI-tested 9310 bolt, chrome-lined & nitride finished
Charging Handle: Standard Mil-Spec AR-15
Lower Parts Kit: Complete Mil-Spec AR-15 LPK for 80% or stripped lowers
Buffer Assembly: AR pistol buffer tube with foam sleeve, spring, and buffer
Chambered in 300 AAC Blackout for superior subsonic performance
Mil-Spec components – 100% made in the USA
Perfect for suppressor-ready builds
Compatible with all Mil-Spec AR-15 lowers
Ships unassembled – great for builders
Note: This kit does not include an 80% lower receiver. Images may not be an exact representation of the final product.
Tags: ar-15, 300, blackout, 10.5 10.5 10.5", pistol, kit, 10", m-lok, free, float, rail, lower, mil-spec, usa