Custom AR-15 (Build From Scratch)
Blank-slate AR-15 platform for selecting every upper, lower, and core component.
- Price
- $1,100
- Calibers
- 5.56x45mm, .223 Rem
- Rail
- mlok
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Key Highlights
- •Pick every core part from upper to lower
- •Best for builders who want full control
- •Compatible with the full AR-15 parts catalog
More AR-15 guides & articles
Guides
Overview
This is the blank-slate custom AR-15 path for builders planning a 5.56/.223 rifle from receivers and core parts rather than buying a single complete firearm. Start with the receiver set, barrel, gas system, handguard, BCG, charging handle, trigger, stock, optic, light, sling, magazines, and ammunition around the intended role.
Key Features
- Build-planning template rather than a buyable firearm SKU
- Standard AR-15 receiver, barrel, gas-system, buffer, stock, trigger, magazine, and handguard compatibility depends on the selected parts
- M-LOK handguard and Picatinny top-rail path modeled as the default modern baseline
- 5.56 NATO and .223 Remington support depends on the chosen barrel chamber and ammunition
Capability Profile
0-10 Scale Across 8 Axes
Pros
- +Maximum control over barrel length, gas system, rail, trigger, stock, optic, light, sling, and magazine setup
- +Broad parts ecosystem makes it easy to model value, duty, competition, and suppressor-ready builds
- +Useful for compatibility planning before buying receivers or upper assemblies
Cons
- −Not a ready-to-buy firearm
- −Reliability depends on the selected barrel, gas port, gas block, BCG, buffer system, magazines, and ammunition
- −Final legal configuration depends on barrel length, muzzle device, brace/stock choice, and local rules
Detailed Specifications
- caliber
- 5.56x45mm / .223 Remington
- platform
- AR-15 build template
- receiverPattern
- Standard AR-15 receiver set baseline
- rail
- Picatinny top rail with M-LOK handguard baseline
- magazineCompatibility
- STANAG-pattern AR-15 magazines
- triggerCompatibility
- AR-pattern fire control group
- priceModel
- Mid-tier core build estimate before optic, light, sling, suppressor, magazines, and ammunition
Video Reviews
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Compatibility Tags
Configure This Platform
Add optics, lights, and accessories to build your perfect Custom AR-15 (Build From Scratch).