Davidson Defense Holdfast 9-inch .22 LR AR-15 Freefloat M-Lok Handguard Pistol Full Build Kit, SBR Ready, Teardrop .22LR Suppressor

Holdfast SBR Ready 9-inch .22 LR AR-15 Full Build Kit w/Teardrop Suppressor

The Holdfast SBR Ready Full Build Kit is built around a 9-inch dedicated .22 LR barrel with a pencil profile, paired with a 7075-T6 aluminum upper receiver finished in Type III hardcoat anodizing. It pairs a 10-inch free-float M-LOK handguard with a Davidson Defense Teardrop rimfire suppressor mounted at the muzzle. A dedicated stainless steel .22 LR bolt group, Mil-Spec charging handle, complete Lower Parts Kit, and carbine buffer-system components are all included. The lower receiver is not included, and this SBR Ready version ships without a brace.

Key Features

• SBR Ready design
• 9-inch dedicated .22 LR barrel, pencil profile
• 7075-T6 aluminum upper receiver, Type III hardcoat anodized
• 10-inch free-float M-LOK handguard, quad-rail front section
• Davidson Defense Teardrop K-baffle rimfire suppressor included
• Complete Mil-Spec Lower Parts Kit and carbine buffer-system components included
• Lower receiver is not included.

Barrel and Suppressor

The barrel on the Holdfast runs 9 inches long, purpose-built for .22 LR in a slender pencil profile rather than a heavier centerfire contour, and it carries a 1/2x28 muzzle thread at its end. Mounted onto that thread is a Davidson Defense Teardrop suppressor, a lightweight K-baffle rimfire design machined from 6061-T6 aircraft-grade aluminum and finished in black anodizing to match the rest of the build. The suppressor itself measures 5.75 inches in length and 1 inch in diameter, adding just 3.4 ounces to the front end of the rifle, and it threads directly onto the barrel's 1/2x28 pattern without an adapter.

Upper Receiver and Handguard

The upper receiver is machined from 7075-T6 aluminum and finished in a durable Type III hardcoat anodizing, cut with M4 feed ramps to promote smooth, reliable feeding and fitted with a forward assist for manually seating the bolt when needed. The ejection port carries a standard .223/5.56-pattern door complete with its rod and spring. Wrapping around the barrel is a 10-inch free-float handguard, built with a quad-rail front section for accessory mounting, front and rear QD sling mounts for quick sling attachment, a slanted front face, and anti-rotation tabs to keep the handguard properly indexed.

Bolt Group and Charging Handle

Cycling this rimfire build is a dedicated .22 LR bolt group machined from stainless steel, purpose-built for this chambering rather than adapted from a centerfire design. A Mil-Spec AR-15 M4 charging handle completes the upper's operating hardware, giving the shooter a familiar manipulation point.

Lower Parts Kit and Buffer System

Rounding out the lower internals is a complete Mil-Spec AR-15 Lower Parts Kit, which includes a Mil-Spec A2 pistol grip along with the fire-control components needed once a lower receiver is on hand. Behind the receiver sits a Mil-Spec heavy-duty six-position buffer tube, holding a standard 3-ounce carbine buffer and a standard USA-made recoil spring. A Mil-Spec AR-15 carbine castle nut and Mil-Spec M16 receiver end plate secure that buffer tube assembly to the lower.

SBR Ready

This Holdfast kit is configured as SBR Ready, which means it ships without a brace so the buyer can select their own final setup. The included component list above reflects exactly what ships with this kit, and it should be reviewed as supplied when planning the completed build. The lower receiver and any furniture selection remain the buyer's responsibility, separate from what's included here. The SBR Ready designation applies specifically to this configuration of the Holdfast.

Follow all manufacturer instructions and safe handling practices.

Ensure compliance with all applicable federal, state, and local laws.

Verify caliber and mounting-system compatibility before use.

Confirm secure attachment and inspect the suppressor before each use.

May Dropship from Davidson Defense.

Lower receiver is not included.

Ships without a brace.

Do not attach a stock unless the resulting configuration complies with all applicable federal, state, and local laws.