300 AAC 80% Kits | AR-15 Custom Builds | Moriarti Armaments
300 Blackout 80% Kits
Build your custom 300 AAC Blackout AR-15 with premium .300 Blackout 80% kits from Moriarti Armaments. Get the best parts for your DIY rifle build with quality, precision, and performance.
-35%
AR-15 .300 Blackout 5" Micro Pistol Kit / 1:7 Twist / Micro Buffer / 4" M-LOK Rail
The Moriarti AR-15 .300 AAC Blackout 5" Micro Pistol Kit is a compact and powerful option for shoote..
-29%
AR-15 300 BLACKOUT 5" PISTOL KIT - SIDE CUT BILLET UPPER WITH 4" HANDGUARD - MICRO - CERAKOTE CAMO BURNT BRONZE
Unleash your full potential with the AR-15 300 Blackout 5" Pistol Kit, designed for ultimate precisi..
-33%
AR-15 300 Blackout 5" Shark Pistol Kit - Side Cut Billet Upper with 4" Handguard - Classic Mini
AR-15 300 Blackout 5" Shark Pistol Kit - Side Cut Billet Upper with 4" Handguard - Classic Mini Unl..
-28%
AR-15 300 BLACKOUT 5" SPIDER PISTOL KIT - FORGED UPPER WITH 4" HANDGUARD - COLOR SET
AR-15 300 BLACKOUT 5" SPIDER PISTOL KIT - FORGED UPPER WITH 4" HANDGUARD - COLOR SETBuild Your Own H..
-39%
AR-15 300 Blackout 5'' Pistol Kit - Side Cut Billet Upper, 4'' Super Slim Handguard, 'Stay Spooky' Skull Dust Cover - Color Set Options
AR-15 300 Blackout 5'' Pistol Kit - Side Cut Billet Upper, 4'' Super Slim Handguard, 'Stay Spooky' S..
-36%
AR-15 300 BLK 5" Complete Compression Series Micro Pistol Kit – Customize Your Build with Your Personal Color
AR-15 300 BLK 5" Complete Compression Series Micro Pistol Kit – Customize Your Build Make it fun. M..
-27%
AR-15 300 BLK 5'' PISTOL KIT - BILLET UPPER / 4'' HANDGUARD / CERAKOTE SPLATTER - CHOOSE COLOR
AVAILABLE IN PINK, TIFFANY BLUE, WHITE, RED AND ORANGE. CHOOSE YOUR PREFERENCE ON TOP OF PAGE.KIT IN..
-38%
AR-15 .300 Blackout 7.5" Complete Ultralight Series Pistol Kit – M-LOK – Choose Your Color
Build your ultimate AR-15 pistol with the 7.5" Complete Ultralight Series Pistol Kit! This custom ki..
-28%
AR-15 300 AAC 7.5" pistol kit - MLOK / SBA3 / SHORTIE
AR-15 300 AAC 7.5" Pistol Kit - M-LOK / SBA3 / SHORTIEBuild Your Own AR-15 Pistol – The Ultimate Cus..
-25%
AR-15 300 Blackout 7.5" Pistol Kit - Cerakote Camo Options, Customizable in Tiffany Blue, Red, Pink, White, and Orange
Ready to build your dream 300 Blackout AR-15 Pistol? Our AR-15 7.5" Pistol Kit offers you everything..
-33%
AR-15 300 Blackout 7.5" Pistol Kit - Side Cut Billet Upper with 7" Handguard - Cerakote Color Options
Unlock your next AR-15 300 Blackout build with our 7.5" Pistol Kit featuring a Side Cut Billet Upper..
-32%
AR-15 300 BLACKOUT 7.5" PISTOL KIT - SIDE CUT BILLET UPPER WITH 7" HANDGUARD - SHOCKWAVE - CERAKOTE CAMO
AR-15 300 BLACKOUT 7.5" PISTOL KIT - SIDE CUT BILLET UPPER WITH 7" HANDGUARD - SHOCKWAVE - CERAKOTE ..
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AR-15 300 AAC Blackout 10.5" pistol kit - MLOK / SBA3 /BLACK
AR-15 300 AAC Blackout 10.5" pistol kit - MLOK / SBA3 /BLACK contains all components to complet..
-27%
AR-15 300 AAC Blackout 10.5" Pistol Kit / Quadrail / Classic - Color Options
AR-15 300 AAC Blackout 10.5" Pistol Kit / Quadrail / Classic - Color Options contains all components..
-22%
AR-15 300 Blackout 10.5" Pistol Build Kit / 10" Slim Mlok / Classic
AR-15 300 Blackout 10.5" complete pistol kit w/10" slim mlok rail offers a classic look and con..
-29%
AR-15 Pistol Length 300 Blackout 16" BLACKHAWK 1/7 Nitride Kit with 10" M-LOK Handguard – Cerakote Camo Options
Build your perfect 300 Blackout AR-15 rifle with the 16" BLACKHAWK Carbine Kit. This high-performanc..
-27%
AR-15 300 AAC Blackout 16" Classic Quadrail Build Kit – Customizable Color Options
AR-15 300 AAC Blackout 16" Classic Quadrail Build Kit – Customizable Color Options, Mil-Spec Compone..
-23%
AR-15 300 Blackout 16" Carbine Kit with 10" M-Lok – Cerakote Camo Accent Colors
AR-15 300 Blackout 16" Carbine Kit with 10" M-Lok – Cerakote Camo Accent Colors – Customizable, Mil-..
-24%
AR-15 300 Blackout 16" Rifle Kit with 15" M-Lok Handguard, Magpul SL Stock and Grip – Cerakote Option
AR-15 300 Blackout 16" Rifle Kit with 15" M-Lok Handguard, Magpul SL Stock and Grip – Cerakote Optio..
-36%
AR-15 300 Blackout 16" Stainless Black Claw rifle kit /12" mlok rail/Adaptive Stock
AR-15 300 Blackout 16" Stainless Black Claw rifle kit /12" mlok rail contains all components to..
-33%
Moriarti 16" Pistol-Length 300AAC Blackout 1/7 Nitride 10" Lightweight M-Lok Classic Rifle Kit
Build your ideal 300 Blackout AR-15 with this complete AR-15 300 Blackout Rifle Build Kit. Designed ..
-29%
Moriarti AR-15 300AAC Blackout 16" Carbine-Length 1/8 Phosphate Magpul Moe Defender Rifle Kit
Build your perfect AR-15 300 Blackout with this high-quality 16" Magpul Moe Defender Rifle Kit. Desi..
-29%
Moriarti Armaments AR-15 SUMMER EDITION 16" Airlight Series Rifle Kit w/Matching Upper | Choose Color & Caliber
The Moriarti Armaments SUMMER EDITION 16" Airlight Series Rifle Kit in Green is the ultimate choice ..