Ar Build Kits: Compare Prices & Find the Best Deals

Primary Arms Updated Aug 11, 2026

Expo Arms Mil-Spec Builder AR-15 Lower Parts Kit

$29.99

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Primary Arms Updated Aug 11, 2026

Expo Arms Mil-Spec Enhanced Builder AR-15 Lower Parts Kit

$49.99

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Primary Arms Updated Aug 11, 2026

Expo Arms Mil-Spec Builder AR-15 Lower Parts Kit & MIMTAC CORE Trigger

$84.99

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Primary Arms Updated Aug 11, 2026

Expo Arms Mil-Spec Builder AR-15 Lower Parts Kit & ANNEX Defense Magwell

$69.94

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United States Association of Gun Owners Updated Aug 10, 2026

Guntec Usa GUNTEC AR15 9" PISTOL BRACE BUILD KIT & BUFFER TUBE BLACK

$145.97

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United States Association of Gun Owners Updated Aug 10, 2026

United States Association of Gun Owners KAK AR-15 Basic Ambidextrous Build Kit

$32.36

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Sportsmans Outdoor Superstore Updated Aug 10, 2026

Kak Industry AR-15 LPK - Basic Ambi Build Kit

$35.99

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Lotz Outdoors Updated Aug 10, 2026

13% OFF

The Takedown Tools Partisan Disruptor FRT + MPI BCG + Armaspec SMB H3 - Complete AR-15 FRT Kit for Suppressed & Short-Gas Builds

$459.99 $529.97

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TLO Outdoors Updated Aug 10, 2026

Strike Enhanced AR-10 Lower Receiver Parts Builder Kit (No Grip/Trigger) AR10ELRPLT

$65.98

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TLO Outdoors Updated Aug 10, 2026

Redfield STT 11.5 Inch Everything But Lower Complete AR Build Kit Black EBTLK-11.5-BLK

$1056.98

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Palmetto State Armory Updated Aug 10, 2026

13% OFF

Tacfire AR-300 Unassembled Pistol Build Kit, Black

$436.99 $502.99

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Palmetto State Armory Updated Aug 10, 2026

13% OFF

Tacfire AR-15 Pistol Build Kit, Black

$436.99 $502.99

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Palmetto State Armory Updated Aug 10, 2026

10% OFF

Tacfire AR-15 Complete Pistol Build Kit, Black

$400.99 $445.99

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Palmetto State Armory Updated Aug 10, 2026

13% OFF

Tacfire Rifle Build Kit w/Lower Parts Kit, Black

$451.99 $519.99

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TLO Outdoors Updated Aug 10, 2026

Tacfire AR-10 .308 Winchester Rifle Build Kit, 20in Black Nitride, 5/8x24 SSRK308LPK20BN

$569.98

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Firearms Depot Updated Aug 10, 2026

Guntec Usa Guntec Ar15 9" Pistol Brace Build Kit & Buffer Tube Black

$136.88

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Sportsmans Outdoor Superstore Updated Aug 10, 2026

Lbe Unlimited Upper Ready Build Kit 12.5in for AR-15

$580.99

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Sportsmans Outdoor Superstore Updated Aug 10, 2026

Lbe Unlimited Ready Build Kit 13.7in for AR Pistol or SBR

$580.99

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Sportsmans Outdoor Superstore Updated Aug 10, 2026

Lbe Unlimited Ready Build Kit 7.5in for AR Pistol or SBR

$501.99

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TLO Outdoors Updated Aug 10, 2026

Armaspec Superlight Gun Builders Kit for AR-15 Lower Receiver Parts, Red ARM251-RED

$82.98

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Sportsmans Outdoor Superstore Updated Aug 10, 2026

Kak Industry AR-15 LPK - Basic Build Kit

$25.99

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TLO Outdoors Updated Aug 10, 2026

Dpms Panther Arms AR-15 CAR-15 Blade Pistol Lower Build Kit, Adjustable Brace, DP51655159027

$118.98

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TLO Outdoors Updated Aug 10, 2026

4% OFF

Armaspec AR-15 Superlight Gun Builders Kit (Black) w/ Anti-Walk Pins & SFT Safety ARM251-BLK

$79.99 $82.98

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TLO Outdoors Updated Aug 10, 2026

Armaspec Superlight AR-15 Gun Builders Kit, Enhanced Lower Parts, Flat Dark Earth ARM251-FDE

$73.98

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MidwayUSA Updated Aug 10, 2026

Real Avid AR-15 Builders Kit

$191.96

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MidwayUSA Updated Aug 10, 2026

Real Avid AR-15 Essential Builders Kit

$169.99

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MidwayUSA Updated Aug 10, 2026

12% OFF

Armaspec Superlight Gun Builders Kit AR-15 Black

$63.65 $71.99

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MidwayUSA Updated Aug 10, 2026

Armaspec Gun Builders Kit AR-15 Black

$67.49

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MidwayUSA Updated Aug 10, 2026

Ar-Stoner AR-STONER AR-15 Enhanced Build Kit with Upper Receiver Assembly 7.62x39mm 16" Barrel Carbine Length 15" M-LOK Handguard, Complete Lower Parts Kit with Magpul MOE Furniture Black - $555.99 at MidwayUSA

Ar-Stoner AR-15 Enhanced Build Kit with Upper Receiver Assembly 7.62x39mm 16" Barrel Carbine Length 15" M-LOK Handguard, Complete Lower Parts Kit with Magpul MOE Furniture Black

$555.99

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MidwayUSA Updated Aug 10, 2026

Ar-Stoner AR-STONER AR-15 Enhanced Build Kit with Upper Receiver Assembly 5.56x45mm NATO 18" Barrel12" M-LOK Handguard, Complete Lower Parts Kit with Magpul MOE Furniture Black - $527.99 at MidwayUSA

Ar-Stoner AR-15 Enhanced Build Kit with Upper Receiver Assembly 5.56x45mm NATO 18" Barrel12" M-LOK Handguard, Complete Lower Parts Kit with Magpul MOE Furniture Black

$527.99

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MidwayUSA Updated Aug 10, 2026

Ar-Stoner AR-STONER AR-15 Enhanced Build Kit with Sporter Billet Upper Receiver Stripped 15" M-LOK Handguard, Complete Lower Parts Kit with Magpul MOE Furniture Black - $229.99 at MidwayUSA

Ar-Stoner AR-15 Enhanced Build Kit with Sporter Billet Upper Receiver Stripped 15" M-LOK Handguard, Complete Lower Parts Kit with Magpul MOE Furniture Black

$229.99

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MidwayUSA Updated Aug 10, 2026

Ar-Stoner AR-STONER AR-15 Enhanced Build Kit with Upper Receiver Assembly 300 AAC Blackout 16" Barrel Pistol Length M-LOK Handguard, Complete Lower Parts Kit with Magpul MOE Furniture Black - $519.99 at MidwayUSA

Ar-Stoner AR-15 Enhanced Build Kit with Upper Receiver Assembly 300 AAC Blackout 16" Barrel Pistol Length M-LOK Handguard, Complete Lower Parts Kit with Magpul MOE Furniture Black

$519.99

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MidwayUSA Updated Aug 10, 2026

Ar-Stoner AR-STONER AR-15 Enhanced Build Kit with Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Mid Length 15" M-LOK Handguard, Complete Lower Parts Kit with Magpul MOE Furniture Black - $479.99 at MidwayUSA

Ar-Stoner AR-15 Enhanced Build Kit with Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Mid Length 15" M-LOK Handguard, Complete Lower Parts Kit with Magpul MOE Furniture Black

$479.99

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MidwayUSA Updated Aug 10, 2026

Ar-Stoner AR-STONER AR-15 Enhanced Build Kit with Sporter Billet Upper Receiver Stripped 13" M-LOK Handguard, Complete Lower Parts Kit with Magpul MOE Furniture Black - $213.99 at MidwayUSA

Ar-Stoner AR-15 Enhanced Build Kit with Sporter Billet Upper Receiver Stripped 13" M-LOK Handguard, Complete Lower Parts Kit with Magpul MOE Furniture Black

$213.99

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MidwayUSA Updated Aug 10, 2026

Ar-Stoner AR-STONER AR-15 Build Kit with Upper Receiver Assembly 300 AAC Blackout 16" Barrel Carbine Length 15" M-LOK Handguard, Complete Lower Receiver Parts Kit, Stock Assembly 6-Position Mil-Spec Collapsible - $469.99 at MidwayUSA

Ar-Stoner AR-15 Build Kit with Upper Receiver Assembly 300 AAC Blackout 16" Barrel Carbine Length 15" M-LOK Handguard, Complete Lower Receiver Parts Kit, Stock Assembly 6-Position Mil-Spec Collapsible

$469.99

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MidwayUSA Updated Aug 10, 2026

Ar-Stoner AR-STONER AR-15 Enhanced Build Kit with Upper Receiver Assembly 22 ARC 18" Barrel 13" M-LOK Handguard, Complete Lower Parts Kit with Magpul MOE Furniture Black - $559.99 at MidwayUSA

Ar-Stoner AR-15 Enhanced Build Kit with Upper Receiver Assembly 22 ARC 18" Barrel 13" M-LOK Handguard, Complete Lower Parts Kit with Magpul MOE Furniture Black

$559.99

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MidwayUSA Updated Aug 10, 2026

Ar-Stoner AR-STONER AR-15 Pistol Build Kit with Upper Receiver Assembly 5.56x45mm NATO 10.3" Barrel M-LOK Handguard, Complete Lower Receiver Parts Kit - $489.99 at MidwayUSA

Ar-Stoner AR-15 Pistol Build Kit with Upper Receiver Assembly 5.56x45mm NATO 10.3" Barrel M-LOK Handguard, Complete Lower Receiver Parts Kit

$489.99

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MidwayUSA Updated Aug 10, 2026

Ar-Stoner AR-15 Pistol Build Kit with Upper Receiver Assembly 5.56x45mm NATO 8" Barrel M-LOK Handguard, Complete Lower Receiver Parts Kit

$446.99

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MidwayUSA Updated Aug 10, 2026

Ar-Stoner AR-STONER AR-15 Enhanced Pistol Build Kit with Upper Receiver Assembly 300 AAC Blackout 10" Barrel Pistol Length M-LOK Handguard, Complete Lower Parts Kit with Magpul MOE Furniture Black - $454.99 at MidwayUSA

Ar-Stoner AR-15 Enhanced Pistol Build Kit with Upper Receiver Assembly 300 AAC Blackout 10" Barrel Pistol Length M-LOK Handguard, Complete Lower Parts Kit with Magpul MOE Furniture Black

$454.99

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MidwayUSA Updated Aug 10, 2026

Ar-Stoner AR-STONER AR-15 Enhanced Pistol Build Kit with Upper Receiver Assembly 5.56x45mm NATO 8" Barrel Pistol Length M-LOK Handguard, Complete Lower Parts Kit with Magpul MOE Furniture Black - $429.99 at MidwayUSA

Ar-Stoner AR-15 Enhanced Pistol Build Kit with Upper Receiver Assembly 5.56x45mm NATO 8" Barrel Pistol Length M-LOK Handguard, Complete Lower Parts Kit with Magpul MOE Furniture Black

$429.99

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Bass Pro Shops Updated Aug 11, 2026

CMMG Lower Parts AR15 Gun Builder's Kit

$39.95

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TLO Outdoors Updated Aug 10, 2026

Tacfire AR Pistol Build Kit, 10.5in 5.56x45mm NATO Black Steel Components Set SSPK556LPK10

$354.98

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TLO Outdoors Updated Aug 10, 2026

Tacfire AR-15 .300 Blackout Rifle Build Kit w/ 16in Barrel, M-LOK Handguard, SSRK300LPK

$379.98

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TLO Outdoors Updated Aug 10, 2026

Wmd Guns AR-15 Accent Build Kit Flat Dark Earth Finish, Color-Coated Controls ACCKIT-FDE

$137.98

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TLO Outdoors Updated Aug 10, 2026

Wilson Combat AR-15 Universal Lower Receiver Small Parts Kit for Billet Builds TRLOWERKB15

$61.98

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TLO Outdoors Updated Aug 10, 2026

Timber Creek Outdoor Inc Timber Creek Outdoors Enforcer AR-15 Complete Build Kit, 15in M-LOK Handguard, TCOEKOD

$502.98

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TLO Outdoors Updated Aug 10, 2026

Timber Creek Outdoor Inc Greyman AR-15 Complete Build Kit, 12-Piece Upgrade Set, Stealth TCGKS

$496.98

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TLO Outdoors Updated Aug 10, 2026

Timber Creek Outdoor Inc Enforcer Complete AR-15 Build Kit, 15in M-LOK, Flat Dark Earth TCOEKFDE

$502.98

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TLO Outdoors Updated Aug 10, 2026

Timber Creek Outdoor Inc Timber Creek Outdoors Greyman Complete AR-15 Build Kit, Forest Finish, TCGKF 816397028370

$496.98

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TLO Outdoors Updated Aug 10, 2026

Tacfire AR Pistol Build Kit .45 ACP, 7.5in Black Nitride Barrel, M-LOK Handguard SSPK45ACPLPK

$391.98

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TLO Outdoors Updated Aug 10, 2026

San Tan Tactical AR-15 Lower Parts Kit Without Grip & Trigger, Matte Black Builder Kit STT-LPK

$44.98

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TLO Outdoors Updated Aug 10, 2026

Radian Weapons Model 1 AR-15 Builder Kit w/ 15.5in Magpul M-LOK Handguard R0406

$1451.98

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TLO Outdoors Updated Aug 10, 2026

M&P Accessories AR-15 Customizable Lower Parts Kit for Custom Builds, Made in USA, 110115

$43.98

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TLO Outdoors Updated Aug 10, 2026

Dpms Panther Arms Retro CAR-15 Lower Build Kit w/ Fiberlite Stock & A2 Grip, DP51655141530

$118.98

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Palmetto State Armory Updated Aug 10, 2026

Timber Creek Enforcer Complete AR-15 Build Kit, Black

$599.99

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United States Association of Gun Owners Updated Aug 10, 2026

Tacfire AR Build Kit 5.56x45mm NATO 7.50" Barrel Black for AR Platform

$335.97

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United States Association of Gun Owners Updated Aug 10, 2026

Tacfire AR Build Kit 9mm Luger 7.50" Barrel Black for AR Platform

$315.97

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United States Association of Gun Owners Updated Aug 10, 2026

Tacfire AR Build Kit 9mm Luger 4.50" Barrel Black for AR Platform

$295.97

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United States Association of Gun Owners Updated Aug 10, 2026

Lbe Unlimited AR145RBK Ready Build Kit 14.5"

$523.97

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United States Association of Gun Owners Updated Aug 10, 2026

Lbe Unlimited AR75RBK Ready Build Kit 7.5"

$452.97

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United States Association of Gun Owners Updated Aug 10, 2026

Armaspec ARM251-ODG SUPERLIGHT GN BUILD KIT 223

$71.99

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United States Association of Gun Owners Updated Aug 10, 2026

Armaspec ARM251-FDE SUPERLIGHT GN BUILD KIT 223

$71.99

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United States Association of Gun Owners Updated Aug 10, 2026

Aim Sports Aim Sports AR5CUB9 Complete Build Kit 5.56x45mm NATO 10.50" Black Nitride Barrel 7075-T6 Aluminum Black Anodized Receiver 10" M-LOK Handguard for AR-15 - $449.99 at United States Association of Gun Owners

Aim Sports AR5CUB9 Complete Build Kit 5.56x45mm NATO 10.50" Black Nitride Barrel 7075-T6 Aluminum Black Anodized Receiver 10" M-LOK Handguard for AR-15

$449.99

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TLO Outdoors Updated Aug 10, 2026

Luth-Ar .308 AR Builder Lower Receiver Parts Kit (No Fire Control/Grip) LRPK-BLDR-308

$48.98

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TLO Outdoors Updated Aug 10, 2026

Luth-Ar AR-15 Builder Lower Parts Kit, Mil-Spec Machined Components, No Trigger/Grip LRPK-BLDR

$43.98

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TLO Outdoors Updated Aug 10, 2026

Lbe Unlimited AR-15 Ready Build Upper Kit w/ 13.7in Cold Hammer Forged Barrel, AR137RBK

$556.98

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TLO Outdoors Updated Aug 10, 2026

Lbe Unlimited AR-15 Ready Build Upper Kit 7.5in Cold Hammer Forged Barrel, Pistol Gas AR75RBK

$483.98

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TLO Outdoors Updated Aug 10, 2026

Lbe Unlimited AR-15 Essentials Parts Kit with Springs & Pins for Builds and Repairs ARESNTL

$18.98

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TLO Outdoors Updated Aug 10, 2026

Kak Industry AR-15 Lower Parts Kit Basic Build Kit, Mil-Spec Essentials AR15-LP-KT-02

$30.98

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TLO Outdoors Updated Aug 10, 2026

Kak Industry AR-15 Lower Parts Kit Spring Kit, Complete 9-Spring Set for Builds & Spares AR15-KT-008

$12.98

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TLO Outdoors Updated Aug 10, 2026

Kak Industry AR-15 Lower Parts Kit Basic Ambidextrous Build Kit with Ambi Selector AR15-LP-KT-03

$38.98

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TLO Outdoors Updated Aug 10, 2026

Doublestar Corp. AR-15 Field Repair Kit for Builds & Repairs, Common Wear Parts Kit AR785

$55.98

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TLO Outdoors Updated Aug 10, 2026

Cmmg AR-15 Lower Parts Kit, Mil-Spec Build/Repair Components, Black Finish 55CA6C5

$70.98

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TLO Outdoors Updated Aug 10, 2026

Cmmg AR-15 Gunbuilder's Lower Parts Kit, Mil-Spec Builder Kit, No Grip/Fire Control Group 55CA601

$43.98

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TLO Outdoors Updated Aug 10, 2026

Cmmg AR-15 Lower Pins and Springs Parts Kit, Mil-Spec Replacement Components for Builds & Repairs 55AFF75

$21.98

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