The Tumbleweed in .223 w/SBM4 Brace is a compact 7.5-inch AR-15 pistol build kit designed for versatility and performance. Chambered in .223 Wylde, it features the "Spriggan" AR-15 7.5" pistol barrel, crafted from durable 4150 Chrome Moly Vanadium steel with a Nitride finish for enhanced longevity. The barrel has a 1:7 twist rate and a pistol gas system, optimizing it for reliability.
The kit includes a stripped upper receiver made from 7075-T6 aluminum with M4 feed ramps and an anodized finish, paired with a free float quad rail handguard for customization. Components like the Recoil Technologies Micro Low-Profile Gas Block, AR-15 M4 Charging Handle, and a complete Bolt Carrier Group made from 9310 Alloy Steel ensure functionality. The SB Tactical SBM4 Pistol Stabilizing Brace and a heavy-duty buffer tube add stability to the package, making this build kit a solid choice for gunsmiths and shooting enthusiasts.
Product Name: Tumbleweed in .223 w/SBM4 Brace
Caliber: .223 Wylde
Barrel Name: "Spriggan" AR-15 7.5" Pistol Barrel
Barrel Length: 7.5-inch
Barrel Material: 4150 Chrome Moly Vanadium
Barrel Finish: Nitride
Barrel Profile: M4
Barrel Twist Rate: 1:7
Barrel Thread Pitch: 1/2x28
Barrel Gas System Length: Pistol
Upper Receiver Name: Stripped Upper Receiver with M4 Feed ramps
Upper Receiver Material: 7075-T6 Aluminum
Upper Receiver Finish: Anodized
Handguard Material: 6061-T6 Aluminum
Handguard Color: Black
Handguard Style: Free Float Quad Rail
Gas Block Name: Recoil Technologies Micro Low-Profile Gas Block
Gas Block Size: 0.750 O.D
Muzzle Device Name: AR-15 1/2x28 TPI GI Birdcage Flash Hider
Muzzle Thread Pitch: 1/2x28
Charging Handle: AR-15 M4 Charging Handle Mil-Spec Quality
Bolt Carrier Name: AR-15 5.56/.223/.300/.350 Complete Bolt Carrier Group
Bolt Carrier Material: 9310 Alloy Steel
Bolt Carrier Finish: Nitride
Pistol Brace Information: SB Tactical SBM4 Pistol Stabilizing Brace
Buffer Tube Kit: Heavy Duty Pistol Buffer Tube for AR-15 and AR Style Pistols
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