Micro ARP Pistols & Compact AR Builds
Explore Moriarti Arms Micro ARP pistols, compact AR uppers, and short-barrel AR platform builds designed for shooters who want a smaller, maneuverable AR-style setup. This collection includes popular compact configurations in 7.62x39, 300 Blackout, 9mm, 10mm, and 5.56, with options for different barrel lengths, handguards, and build styles.
Whether you are looking for a micro AR pistol, compact PCC-style build, or short AR upper assembly, this category brings our most popular Micro ARP configurations into one easy-to-shop collection.
Read our complete Micro ARP Buyer's Guide →
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AR-9 9MM 4.5" Mini Pistol Build Kit w/ SBA3 Brace - M-Lok / Non-LRBHO
AR-9 9MM 4.5" Mini Pistol Build Kit w/ SBA3 Brace - M-Lok / Non-LRBHOBuild your custom AR-9 9MM pist..
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MA-10 .308 WIN MORIARTI 7.5" PISTOL / CHOOSE YOUR CERAKOTE COLOR / SUPPRESSOR READY
Crafted for the discerning shooter, the MA-10 .308 Win Moriarti 7.5" Pistol delivers outstanding pow..
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MA-10MM 4" Micro Glock Style Pistol / Custom Anodized Colors / Non-LRBHO
CURRENT ETA: 6-8 WEEKSIntroducing the MA-10MM 4" Micro Glock Style Pistol — your compact and customi..
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MA-15 Moriarti 5" Cookie Semi-Auto Pistol / Choose Caliber / SBA3 Brace - Lightweight, Precision Performance
MA-15 Moriarti 5" Cookie Semi-Auto Pistol / Choose Caliber / SBA3 Brace - Lightweight, Precision Per..
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MA-15 Moriarti 5" Spitfire Micro Mini Semi Auto Pistol | SBA3 | Multiple Calibers
The MA-15 Moriarti 5" Spitfire Micro Mini Semi Auto Pistol is a compact powerhouse that offers excep..
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MA-15 Moriarti Arms 5.56 NATO 5" Brindle M-LOK Pistol – SBA3 Brace, Sidewinder Diffuser, and Cerakote Finish
Introducing the MA-15 Moriarti Arms 5.56 NATO 5" Brindle M-LOK Pistol, designed for performance, ver..
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MA-9 9MM 4.5" MICRO GLOCK STYLE PISTOL / NON-LRBHO - CHOOSE COLOR
The MA-9 9MM 4.5" Micro Glock Style Pistol is the perfect choice for those looking for a compact, hi..
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MA-9 9MM 4.5" Micro Glock Style Pistol Kit - Choose Color | Non-LRBHO
MA-9 9MM 4.5" Micro Glock Style Pistol Kit - Choose Color | Non-LRBHO - Complete Your DIY 9MM Projec..
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MA-9 9MM 4.5" Mini Semi Auto Pistol | Slick Side |Classic | Glock Style
The MA-9 9MM Mini Semi Auto Pistol delivers compact power and innovative design. Built for performan..
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MA-9 9MM MORIARTI 4.5" ENHANCED SPORTING MINI GLOCK STYLE PISTOL - NON-LRBHO, SBA3
FFL Transfer RequiredThe MA-9 9MM 4.5" Enhanced Sporting Mini Glock Style Pistol offers exceptional ..
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Moriarti AR-10 .308 7.5" Hybrid Upper Receiver Assembly – MLOK / Shroud
Upgrade your AR-10 project with the AR-10 .308 7.5" Hybrid Upper Receiver Assembly, designed for sho..
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Moriarti AR-10 6.5 Creedmoor 7.5" Hybrid Upper Receiver Assembly – Pistol-Length Gas, 1:8 Twist, Shroud
Upgrade your AR-10 project with the AR-10 6.5 Creedmoor 7.5" Hybrid Upper Receiver Assembly, designe..
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Moriarti AR-10 8" 8.6 Blackout Big Gunner Upper Assembly / Muzzlok
Moriarti AR-10 8" 8.6 Blackout Big Gunner Upper Assembly with Muzzlok is a perfect addition to your ..
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Moriarti AR-10 8.6 Blackout 8" Hybrid Upper – M-LOK, Shroud, Big Bore Build
Enhance your shooting experience with the AR-10 8.6 BLACKOUT 8" Hybrid Upper Receiver Assembly, desi..
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Moriarti AR-10 8.6 Blackout 8" Pistol – Tactical Mini Build, Classic Design
VA CLIENTS - GUARANTEED DELIVERY TO YOUR FFL BY JULY 1 DEADLINEThe Moriarti AR-10 8.6 Blackout 8" Ta..
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Moriarti AR-10MM 5.5" Slick Side Micro Pistol Complete Upper / Shroud / BCG & Charging Handle - Non-LRBHO
Key Features5.5-inch 10mm barrel, 4150 CrMoV steel, nitride finish, 1:16 twist, 5/8x24 thread pitch5..
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MORIARTI AR-15 5.56 NATO 5" Micro Pistol Upper Assembly / Suppressor Ready
The MORIARTI AR-15 5.56 NATO 5" Pistol Upper Assembly is precision-engineered for superior performan..
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Moriarti AR-47 7.62x39 5" Moriarti Minimalist Series Semi Auto Pistol | Ergo | Micro Buffer
The AR-47 Minimalist Series Pistol by Moriarti Arms delivers a compact, rugged, and powerful platfor..
-600x600-600x600%20(1)-228x228.webp "Moriarti AR-9 4.5\" Pistol Upper Assembly with Flash Can, BCG, and Charging Handle - Non-LRBHO")
-228x228.webp "Moriarti AR-9 4.5\" Pistol Upper Assembly with Flash Can, BCG, and Charging Handle - Non-LRBHO")
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Moriarti AR-9 4.5" Pistol Upper Assembly with Flash Can, BCG, and Charging Handle - Non-LRBHO
The AR-9 4.5" Pistol Upper is designed for compact performance and reliable operation in your 9mm AR..
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Moriarti AR-9 9MM 3" Pistol Length Complete Upper Receiver - MLOK, Flash Can, Non-LRBHO
The Moriarti AR-9 9MM 3" Pistol Length Complete Upper Receiver is the perfect choice for ..
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MORIARTI AR-9 9MM 4.5" DIAMOND CUT 4" MLOK UPPER ASSEMBLY / MULTIPORT / CH
The Moriarti AR-9 9mm 4.5 Diamond Cut 4 M-Lok Upper Assembly with a multiport feature, including an ..
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Moriarti AR-9 9MM 4.5" Pistol Upper Assembly with BCG and Charging Handle - Slick, Non-LRBHO
The AR-9 9mm 4.5" Pistol Upper Assembly delivers outstanding performance and versatility in a compa..
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Moriarti AR-9 9MM 4.5" Slick Side Micro Pistol Upper / Shroud / BCG & Charging Handle - Non-LRBHO
Upgrade your AR-9 pistol build with the AR-9 9MM 4.5" Slick Side Micro Pistol Upper. This complete u..
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MORIARTI AR-9 9MM 4.5" SLICK SIDE PISTOL UPPER ASSEMBLY /7" FAKE CAN / BCG & CH / NON LRBHO
AR-9 9MM 4.5" SLICK SIDE PISTOL UPPER ASSEMBLY /7" FAKE CAN / BCG & CH / NON LRBHOThe AR-9..
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Moriarti Armaments AR-15 300 Blackout 5" Cookie Cutter Upper Assembly
Elevate your shooting experience with the Moriarti Armaments 300 Blackout 5" Cookie Cutter Upper Ass..
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Moriarti Arms AR-10MM 4" Micro Glock Style Pistol | Anodized Black | Non-LRBHO | Blowback
The Moriarti Arms AR-10MM 4" Micro Glock Style Pistol offers superior power and precision in a compa..
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AR-10MM 4.5" MLOK COMPLETE PISTOL KIT /SLICK SIDE/NON-LRBHO
Moriarti Arms, Blow Back, 10MM, 4.5" Barrel, Black Finish, Slick side upper, Non-LRBHO, Mlok, Glock ..
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AR-10MM 5.5" Micro ARP 10mm AR-15 Full Build Kit /Slick / Suppressor Ready
This Micro ARP 10mm AR-15 Full Build Kit is configured for the SBR Ready designation. The kit center..
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AR-10MM 5.5" MLOK COMPLETE PISTOL KIT /SLICK SIDE / NON-LRBHO
Moriarti Arms, Blow Back, 10MM, 5.5" Barrel, Black Finish, Slick side upper, Non-LRBHO, Mlok, Glock ..
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AR-15 300 Blackout 6" Modular Pistol Upper Assembly / Hybrid Mlok / A2
AR-15 300 Blackout 6" Modular Pistol Upper Assembly | Hybrid MLOK | A2 Flash HiderFeatures:Premium B..
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AR-15 5" 5.56 NATO PISTOL KIT / MLOK / CERAKOTE ACCENT / CLASSIC
AR-15 5" 5.56 NATO PISTOL KIT / MLOK / CERAKOTE ACCENT / CLASSIC. The kit comes WITHOUT 8..
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AR-15 5.56 NATO 5" Cookie Cutter Upper Assembly – MLOK, Anodized Black
Upgrade your AR-15 build with the 5.56 NATO 5" Cookie Cutter Upper Assembly. Designed for high-perfo..
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AR-15 5.56 NATO 5" Moriarti Micro Mini Series Semi-Auto Pistol | Ergo Grip | Micro Buffer
The AR-15 5.56 NATO 5" Moriarti Micro Mini Series Semi-Auto Pistol is engineered for those who appre..
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AR-15 5.56 NATO 5" Pistol Kit - Forged Upper, 4" M-LOK, Choose Your Accent Color: Blue, Silver, or Gold
Build your dream AR-15 pistol with this 5.56 NATO 5" Pistol Kit, designed for ultimate performance a..
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AR-15 5.56 NATO 5'' PISTOL UPPER ASSEMBLY / BILLET UPPER / GOLD MUZZLE BRAKE
AR-15 5.56 NATO 5'' PISTOL UPPER ASSEMBLY / BILLET UPPER / GOLD MUZZLE BRAKE FEATURES: Chamber:&n..
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AR-15 5.56 NATO 5'' SLICK BILLET UPPER ASSEMBLY / 4'' MLOK / SHARK / FLAG DC and CH
AR-15 5.56 NATO 5'' BILLET UPPER ASSEMBLY / 4'' MLOK / SHARK / FLAG DC and CH:Featuring a sleek desi..
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AR-15 5.56 NATO 6" Modular Pistol Upper Assembly | Hybrid MLOK | A2 Flash Hider
Upgrade your AR-15 build with the Moriarti Arms 6" 5.56 NATO Modular Pistol Upper Assembly—engineere..
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AR-9 5.5" Slick Side Spitfire Pistol Upper with Hybrid BCG and Charging Handle - Non-LRBHO
The AR-9 5.5" Slick Side Spitfire Pistol Upper is the perfect choice for building your 9mm AR pistol..
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AR-9 9MM 5.5" 'Beware' Pistol Build Kit – Forged Upper, 4" Handguard, Non LRBHO
Build your ultimate AR-9 9MM Pistol with this 5.5" 'Beware' Pistol Build Kit, featuring a Forged Upp..
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AR-9 9MM 5.5" Complete Pistol Upper Receiver with Sound Forwarder
The AR-9 9MM 5.5" Complete Pistol Upper Receiver with Sound Forwarder is a high-performance, blowbac..
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MA-15 MORIARTI 5" MINI SEMI AUTO PISTOL / CLASSIC DESIGN W / MAG - CHOOSE CALIBER
Elevate your shooting game with the AR-15 Moriarti 5" Mini Series Pistol. Customizable, durable, and..
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MA-9 9MM 4.5" ENHANCED SPORTING SERIES MINI GLOCK STYLE PISTOL / SBA3 / FDE / NON-LRBHO
The MA-9 9mm 4.5" Enhanced Sporting Series Mini Glock Style Pistol by Moriarti Armaments offers a sl..
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Moriarti AR-9 9MM 5.5" Mini Mlok Upper Assembly – Cone Muzzle, AR-15 Upper Receiver, Made in USA
Enhance your AR-9 build with the Moriarti AR-9 9MM 5.5" Mlok Mini Upper Assembly featuring a slim pr..
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MA-9 9MM Glock Style 5.5" Classic AR Pistol by Moriarti Arms / Mlok / Non-LRBHO
Enhance your shooting experience with this Glock-style mini pistol, designed for superior accuracy a..
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Moriarti 5.5" 9mm 1:10 Elite Barreled Upper with 7" M-LOK Rail & Flash Can – Choose Color
Moriarti Armaments presents the 5.5" 9mm 1:10 HBAR Elite Barreled Upper, featuring an ultra-durable ..