Custom AR-15 (Build From Scratch)

Blank-slate AR-15 platform for selecting every upper, lower, and core component.

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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

Specifications

Price: $1,100
Weight: N/A
Calibers: 5.56x45mm, .223 Rem
Rail Type: mlok
Best For: home defense range training outdoor defense competition duty patrol

Capability Profile

0-10 Scale Across 8 Axes

Compatibility Tags

family: modern-riflefamily: ar-patterntrigger: ar-fcginterface: picatinny-tophandguard: mlokmag-type: stanagbarrel: standard

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

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