Details
Davidson Defense Last Impact 16" Carbine-Gas 5.56 NATO AR-15 Full Build Kit delivers complete components and proven performance for custom AR-15 assemblies. Constructed with 16-inch 4150 CrMoV steel barrel featuring phosphate finish and 1:7 twist rate optimizing 5.56 NATO and .223 accuracy, carbine-length gas system providing reliable cycling, 7075-T6 aluminum upper receiver with M4 feed ramps and Type III anodizing ensuring durability, free-float KeyMod handguard in black enabling accessory mounting while minimizing weight, complete bolt carrier group made from 9310 and 8620 alloy steels with nitride finish, mil-spec M4 charging handle, micro low-profile gas block, SOPMOD collapsible stock with storage compartments, and GI birdcage flash hider—perfect for complete AR-15 builds, mid-range tactical configurations, custom rifle assemblies, and gunsmiths seeking comprehensive build kits with quality components for reliable AR-15 platforms.
Key Specifications:
- Model: Davidson Defense Last Impact 16" Full Build Kit
- Platform: AR-15 carbine configuration
- Barrel Length: 16 inches carbine profile
- Barrel Material: 4150 CrMoV steel construction
- Barrel Finish: Phosphate corrosion-resistant coating
- Twist Rate: 1:7 for optimal bullet stabilization
- Gas System: Carbine-length reliable cycling
- Caliber: 5.56 NATO/.223 Remington
- Upper Receiver: 7075-T6 aluminum with M4 feed ramps
- Upper Finish: Type III hard anodized
- Handguard: Free-float KeyMod black finish
- BCG Material: 9310 bolt steel, 8620 carrier steel
- BCG Finish: Nitride wear-resistant coating
- Charging Handle: Mil-spec M4 pattern
- Gas Block: Micro low-profile design
- Stock: SOPMOD collapsible with storage
- Muzzle Device: GI birdcage flash hider
- Color: Black tactical finish
Perfect For:
- Complete AR-15 carbine builds and assemblies
- Mid-range tactical rifle configurations
- Custom builds requiring complete component kits
- First-time AR-15 builders needing all parts
- Gunsmiths seeking quality full build solutions
- Shooters prioritizing reliable carbine-length systems
16-Inch 4150 CrMoV Barrel with Carbine Gas System: The 16-inch barrel is crafted from 4150 Chrome Moly Vanadium (CrMoV) steel, providing durability and accuracy for demanding applications while meeting minimum legal barrel length requirements. The phosphate finish provides corrosion resistance and wear protection for extended barrel life in various environmental conditions. The 1:7 twist rate optimizes stabilization for 5.56 NATO ammunition including heavier projectiles from 55 to 77 grains, ensuring versatility across ammunition types. The carbine-length gas system provides reliable cycling with standard ammunition while maintaining manageable recoil and proven reliability in the most common AR-15 gas configuration.
7075-T6 Upper Receiver with Free-Float KeyMod Handguard: The upper receiver is crafted from 7075-T6 aluminum with M4 feed ramps for enhanced reliability with various ammunition types and Type III hard anodizing for superior wear resistance and corrosion protection. The M4 feed ramps improve feeding reliability particularly with hollow-point and specialty ammunition. The free-float KeyMod handguard in black provides mounting capability for lights, lasers, foregrips, and accessories using KeyMod-compatible attachments while minimizing weight compared to quad-rail systems. The free-float design improves accuracy potential by eliminating barrel contact that can affect precision.
Complete Nitride Bolt Carrier Group with Mil-Spec Components: The complete bolt carrier group features 9310 alloy steel bolt providing superior strength for the high-stress bolt lugs and 8620 alloy steel carrier offering durability for the carrier body. The nitride finish provides wear resistance and corrosion protection while reducing friction for smooth cycling and easier cleaning compared to phosphate BCGs. This complete BCG includes all components ready for installation. The mil-spec M4 charging handle provides reliable charging operation, while the micro low-profile gas block maintains sleek profile under the free-float handguard for clean appearance and protected gas system.
SOPMOD Stock with Complete Muzzle Device: The SOPMOD (Special Operations Peculiar Modification) style collapsible stock features storage compartments for batteries, tools, or small accessories while providing adjustable length of pull for shooter comfort and adaptability. The collapsible design accommodates different shooting positions, gear configurations, and shooter preferences. The GI birdcage flash hider reduces muzzle flash for improved shooter visibility during low-light shooting while providing standard 1/2x28 threading for future muzzle device upgrades. The Davidson Defense Last Impact 16" Carbine-Gas AR-15 Full Build Kit is designed for builders and gunsmiths seeking complete AR-15 solutions—combining 4150 CrMoV barrel with carbine gas system, 7075-T6 upper receiver with M4 feed ramps, free-float KeyMod handguard, complete nitride BCG, mil-spec charging handle, SOPMOD stock, and GI flash hider in a comprehensive package that delivers all essential upper components, proven reliability, and professional quality ideal for complete AR-15 carbine builds and custom rifle assemblies.
