Davidson Defense Strata 11.5-inch Carbine-Gas 1:8 .223 Wylde AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit

Strata 11.5 Inch Carbine Gas 1:8 223 Wylde AR 15 M Lok Upper Build Kit

This upper build kit centers on a KAK Industry 11.5 inch 223 Wylde barrel with carbine gas and government profile. The 223 Wylde chamber accepts both 223 Remington and 5.56 NATO ammunition while maintaining tighter tolerances for improved accuracy potential. A 10 inch freefloat M Lok handguard provides full length accessory mounting, and the 7075 T6 aluminum upper receiver features M4 feed ramps for reliable feeding.

Key Features

• KAK Industry 11.5 inch 223 Wylde barrel with 1:8 twist and government profile
• 4140 steel construction with nitride finish for wear and corrosion resistance
• Carbine length gas system for reliable cycling in compact configurations
• 10 inch freefloat M Lok handguard in 6061 T6 aluminum
• 7075 T6 aluminum upper receiver with anodized finish and M4 feed ramps
• Micro low profile gas block for 0.750 diameter barrel
• 1/2x28 GI birdcage flash hider included

Perfect For

• Builders creating a compact 223 Wylde upper with proven KAK barrel performance
• Those seeking ammunition flexibility across 223 and 5.56 NATO loads
• Shooters prioritizing freefloat accuracy and M Lok modularity
• Anyone building an 11.5 inch carbine gas platform from individual components

223 Wylde and Carbine Gas Balance

The 223 Wylde chamber offers crossover compatibility between 223 Remington and 5.56 NATO while maintaining match grade throat dimensions. The 1:8 twist rate stabilizes bullet weights from 55 grain to 77 grain effectively. Carbine length gas in an 11.5 inch barrel provides dependable cycling with manageable recoil impulse, making this combination work well for shooters who want compact length without sacrificing gas system reliability.

Freefloat M Lok Handguard Coverage

The 10 inch handguard extends nearly to the muzzle device, maximizing accessory mounting space without adding unnecessary weight. Freefloat design isolates the barrel from external pressure, helping maintain consistent point of impact when grips or accessories are added. In our experience, this length works well for lights, vertical grips, or hand stops while leaving the gas block fully covered and protected.

Government Profile and Nitride Finish

The government profile concentrates material where barrel stress is highest while reducing weight toward the muzzle. This distribution balances durability with handling characteristics in shorter barrels. Nitride finish penetrates the steel surface rather than coating it, providing internal and external corrosion resistance along with a hard wearing surface that holds up through extended use.

BCG and charging handle not included

Verify component compatibility before use

Inspect all components prior to use

Follow safe handling and manufacturer instructions

Ensure compliance with all applicable laws