Gear Guy / Builds / Home Defense SBR

Build file · AR-15 platform

Home Defense
SBR

A 10.5″ short-barreled rifle set up for inside the house: carbine-length gas under a 10″ Geissele rail, a HUXWRX flow-through can, an Aimpoint T-2 on a FAST riser, a SureFire M600DF and a Holosun laser on one pressure pad. Configured entirely in Gear Guy — this page is the build’s actual parts file.

10.5″Barrel · carbine gas
18 partsfitted on the bench
$4,101Parts listed below
NFASBR + suppressor
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The Home Defense SBR rendered on Gear Guy's bench

Captured from the app · this exact configuration

Parts file

What’s on this rifle.

Straight from the app’s shared build page — including which parts ship to your door, which need a licensed dealer, and which live under the NFA.

BUILD FILE · HOME DEFENSE SBRAR-15 · 10.5″ · 5.56
PartFulfillmentPrice
Mil-Spec A4 Upper ReceiverVarious · upper_receiver FFL transfer required $80
Mil-Spec Stripped Lower ReceiverVarious · lower_receiver FFL transfer required $90
10.5in Government Profile Barrel (Carbine Gas)Various · barrel Ships to your door Price TBD
Geissele SMR Mk4 10" M-LOK RailGeissele · handguard Ships to your door $290
Daniel Defense Collapsible ButtstockDaniel Defense · stock Ships to your door Price TBD
Daniel Defense Pistol GripDaniel Defense · grip Ships to your door Price TBD
HUXWRX QD Flash Hider 556 (1/2x28)HUXWRX · muzzle Ships to your door Price TBD
OSS/HUXWRX HX-QD 556 TiHUXWRX · suppressor NFA item · ATF registration $1,199
Aimpoint Micro T-2 (FAST riser)Aimpoint · optic Ships to your door $1,009
Magpul PMAG 30 Gen M3 Window (5.56)Magpul · magazine Ships to your door $16
SureFire M600DF Scout LightSureFire · light Ships to your door $319
Holosun LS321G LaserHolosun · laser Verify export & local law $799
SureFire SR-D-IT Dual Pressure Pad (Light + ATPIAL Laser)SureFire · switch Verify export & local law $139
Daniel Defense M-LOK Vertical ForegripDaniel Defense · foregrip Ships to your door $40
Mil-Spec Single-Stage TriggerVarious · trigger Ships to your door Price TBD
Mil-Spec Charging HandleVarious · charging_handle Ships to your door $15
Mil-Spec BCG (MPI/HPT)Various · bcg Ships to your door $90
Carbine Buffer & Spring KitVarious · buffer Ships to your door $15
18 parts · 5 unpriced · captured September 2026 PARTS LISTED $4,101

Why this build is an SBR — and what that means

This configuration is a Short-Barreled Rifle under the National Firearms Act: a rifle with a barrel under 16 inches. Owning one requires ATF registration and a background check. As of January 1, 2026 the federal tax is $0, but registration is still required. The suppressor on this build is its own NFA item with its own registration.

This is general information, not legal advice. Federal rules only — your state may differ. Rules change; verify current ATF guidance before configuring a real firearm. Learn more at atf.gov.

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