cc-settings-icon BUILD AT HOME
80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states.
cc-gun-icon INCREDIBLY PRECISE
We utilize state of the art 5-axis CNC machines to mill all our .308 and AR-15 80 percent lower receivers to incredibly precise tolerances using premium billet aluminum.
cc-hand-icon RIDICULOUSLY EASY
We also offer our patented AR-15 and .308 Easy Jigs® which is the first 80% lower jig that makes it ridiculously easy for a non-machinist to finish their 80% lower.
cc-thumbs-icon 100% SATISFACTION GUARANTEED
Products manufactured by 80% Arms carry a lifetime warranty against manufacturing defects. We will promptly replace or repair any product that we determine to be defective.

Parts & Accessories

  • SMITH DEFENSE - AR-15 Mil-Spec Lower Parts Kit
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    SMITH DEFENSE - AR-15 Mil-Spec Lower Parts Kit

    $69.99
  • SMITH DEFENSE - AR 308 Mil-Spec Lower Parts Kit
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    SMITH DEFENSE - AR 308 Mil-Spec Lower Parts Kit

    $74.99
  • AR550 Steel Plate Body Armor Set
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    AR550 Steel Plate Body Armor Set

    $259.99
  • Complete Lower Build Kit
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    Complete Lower Build Kit

    $129.97
  • SBA5 5 Position Adjustable Pistol Stabilizing Brace
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    SBA5 5 Position Adjustable Pistol Stabilizing Brace

    $124.99
    $99.99
  • Magpul Industries DAKA C44 Hard Rifle Case 48"
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    Magpul Industries DAKA C44 Hard Rifle Case 48"

    $322.05
  • Magpul Industries DAKA C35 Hard Rifle Case 38.8"
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    Magpul Industries DAKA C35 Hard Rifle Case 38.8"

    $293.55
  • Plano Protector Series 4 Pistol/Accessory Case
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    Plano Protector Series 4 Pistol/Accessory Case

    $24.99
  • Plano Tactical Rifle Case 38.75"
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    Plano Tactical Rifle Case 38.75"

    $74.99
  • Plano Special Edition Double Scoped Rifle/Shotgun Case 52.5"
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    Plano Special Edition Double Scoped Rifle/Shotgun Case 52.5"

    $59.99
  • Plano Protector Series Single Pistol Case 10"
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    Plano Protector Series Single Pistol Case 10"

    $9.99
  • Plano SE Series Single Scoped Pistol Case 13.5"
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    Plano SE Series Single Scoped Pistol Case 13.5"

    $10.99
  • Magpul Daka Soft Rifle Case 44" Blk
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    Magpul Daka Soft Rifle Case 44" Blk

    $179.55
  • 80% Arms Skull Beanie
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    80% Arms Skull Beanie

    $29.99
  • SMITH DEFENSE - Sig P365 Extended Magazine Release
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    SMITH DEFENSE - Sig P365 Extended Magazine Release

    $29.99
    $24.99
  • P80™ Enhanced Pin set
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    P80™ Enhanced Pin set

    $12.99
  • GST9 Enhanced Pin set
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    GST9 Enhanced Pin set

    $9.99
  • SMITH DEFENSE - 308 Takedown and Pivot Pin Set
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    SMITH DEFENSE - 308 Takedown and Pivot Pin Set

    $19.99
  • SMITH DEFENSE - AR-15 Takedown and Pivot Pin Set
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    SMITH DEFENSE - AR-15 Takedown and Pivot Pin Set

    $14.99
  • Magpul MOE Carbine Stock Mil-Spec - Black
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    Magpul MOE Carbine Stock Mil-Spec - Black

    $42.70
  • Sample Mag Pack- 9MM
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    Sample Mag Pack- 9MM

    $56.63
  • Sample Mag Pack- AR15
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    Sample Mag Pack- AR15

    $31.82
  • Buffer Tube Kit Bundle
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    Buffer Tube Kit Bundle

    $229.99
  • SMITH DEFENSE - AR-9/45 Carbine Buffer Tube Kit
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    SMITH DEFENSE - AR-9/45 Carbine Buffer Tube Kit

    $69.99
  • SMITH DEFENSE - AR-15 Pistol Buffer Tube Kit
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    SMITH DEFENSE - AR-15 Pistol Buffer Tube Kit

    $39.99
  • New Shooter Bundle
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    New Shooter Bundle

    $125.00
  • HOLOSUN 2MOA Open Reflex
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    HOLOSUN 2MOA Open Reflex

    $309.99
  • Streamlight ProTac HL-X Weapon Light
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    Streamlight ProTac HL-X Weapon Light

    $134.60
  • Magpul CTR Carbine Stock Mil-Spec - FDE
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    Magpul CTR Carbine Stock Mil-Spec - FDE

    $64.95
    $61.99
  • Magpul MOE K2 + Pistol Grip - FDE
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    Magpul MOE K2 + Pistol Grip - FDE

    $21.05
  • Magpul MOE+ Grip - FDE
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    Magpul MOE+ Grip - FDE

    $22.75
  • CMC 3.5 LBS. Flat Trigger
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    CMC 3.5 LBS. Flat Trigger

    $174.00
  • Magpul MBUS PRO Rear Sight Fits Picatinny Flip Up Steel Black
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    Magpul MBUS PRO Rear Sight Fits Picatinny Flip Up Steel Black

    $104.95
  • Magpul MBUS PRO Front Sight Fits Picatinny Flip Up Steel Black
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    Magpul MBUS PRO Front Sight Fits Picatinny Flip Up Steel Black

    $84.95
  • Radian Weapons Talon Ambidextrous Safety Selector Black 2 Lever Kit
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    Radian Weapons Talon Ambidextrous Safety Selector Black 2 Lever Kit

    $64.95
  • OUT OF STOCK
    Aero Precision Gamma 556 Muzzle Brake 223 Rem/ 556 Nato 1/2x28
    SOLD OUT

    Aero Precision Gamma 556 Muzzle Brake 223 Rem/ 556 Nato 1/2x28

    $84.99
  • Button for AR-10 lower receivers on the left. Button for AR-15 lower receivers on the right.
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    Extended Magazine Release Button

    $10.00
  • Lancer - Magazine - AR15 - 30R - Black
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    Lancer - Magazine - AR15 - 30R - Black

    $19.99
  • Lancer - Magazine - AR15 - 30R - Smoke
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    Lancer - Magazine - AR15 - 30R - Smoke

    $22.41
  • Magpul - MOE K2+ Pistol Grip - Black
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    Magpul - MOE K2+ Pistol Grip - Black

    $24.95
  • Magpul MOE+ Grip - Black
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    Magpul MOE+ Grip - Black

    $22.75
  • TekMat - AR-15 Rifle Mat
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    TekMat - AR-15 Rifle Mat

    $24.99
  • Hoppe's Lubricating Oil
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    Hoppe's Lubricating Oil

    $5.00
  • Corded Ear Plugs - Walker's
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    Corded Ear Plugs - Walker's

    $3.99
  • Shooting Glasses - Walker's
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    Shooting Glasses - Walker's

    $3.99
  • Sonic Defenders Max Ear Plug - SureFire
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    Sonic Defenders Max Ear Plug - SureFire

    $16.99
  • Ambidextrous Safety Selector Kit - AR15 - CMMG
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    Ambidextrous Safety Selector Kit - AR15 - CMMG

    $29.95
  • UTG Armorer's Multi-Function Combo Wrench
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    UTG Armorer's Multi-Function Combo Wrench

    $44.97
  • Magpul Gen 3 PMAG .308 / 7.62 20rd
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    Magpul Gen 3 PMAG .308 / 7.62 20rd

    $19.95
  • Magpul Gen M2 MOE PMAG 5.56 / .223 30rd
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    Magpul Gen M2 MOE PMAG 5.56 / .223 30rd

    $12.95
  • AR-15/M16 BOLT CARRIER GROUP - BLACK NITRIDE
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    AR-15/M16 BOLT CARRIER GROUP - BLACK NITRIDE

    $99.99
  • 80% Arms Official Hoodie
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    80% Arms Official Hoodie

    $39.99
  • Magpul Gen 3 PMAG .308 / 7.62 25rd
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    Magpul Gen 3 PMAG .308 / 7.62 25rd

    $22.95
  • Lower Tension Screw
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    Lower Tension Screw

    $2.99
  • Magpul Gen 3 PMAG .223 / 5.56 10rd
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    Magpul Gen 3 PMAG .223 / 5.56 10rd

    $14.20
  • CMMG AR-15 Lower Parts Kit
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    CMMG AR-15 Lower Parts Kit

    $69.95
  • Magpul MOE K Grip - BLACK
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    Magpul MOE K Grip - BLACK

    $19.95
  • Hexmag 10/30 5.56 Magazine
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    Hexmag 10/30 5.56 Magazine

    $14.99
    $10.99
  • SMITH DEFENSE - AR-15 Carbine Buffer Tube Kit
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    SMITH DEFENSE - AR-15 Carbine Buffer Tube Kit

    $39.99
  • 80% Arms Official T-Shirt
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    80% Arms Official T-Shirt

    $19.99 - $21.99
  • OUT OF STOCK
    Magpul MOE M-LOK Hand Guards, Carbine Length - Black
    SOLD OUT

    Magpul MOE M-LOK Hand Guards, Carbine Length - Black

    $29.95
  • Magpul MBUS Flip-Up Front Sight - Black
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    Magpul MBUS Flip-Up Front Sight - Black

    $37.95
  • Hexmag 10/20 .308/7.62 Magazine
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    Hexmag 10/20 .308/7.62 Magazine

    $19.99
    $17.99
  • Radian Raptor Ambidextrous Charging Handle - AR 15
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    Radian Raptor Ambidextrous Charging Handle - AR 15

    $104.95
  • BCM Low Profile Gas Block (steel with set screws) 750
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    BCM Low Profile Gas Block (steel with set screws) 750

    $44.95
  • CMMG AR-15 Lower Parts Build Kit
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    CMMG AR-15 Lower Parts Build Kit

    $38.64
  • 22LR AR Conversion KIT with (3) 10RD Magazines
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    22LR AR Conversion KIT with (3) 10RD Magazines

    $202.31
  • CMC Anti Walk Trigger Pins
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    CMC Anti Walk Trigger Pins

    $13.50
  • Magpul Gen 3 PMAG .308 / 7.62 10rd
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    Magpul Gen 3 PMAG .308 / 7.62 10rd

    $18.95
  • Fixed A2 AR-15 Buttstock
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    Fixed A2 AR-15 Buttstock

    $82.97
  • BLACK
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    AR-15 Magpul MOE Carbine Stock Mil-Spec 6 Position Carbine Buffer Tube Kit

    $100.65
    $79.99
  • Magpul MOE Hand Guards, Carbine Length - FDE
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    Magpul MOE Hand Guards, Carbine Length - FDE

    $24.99
  • SMITH DEFENSE - AR-10/308 Carbine Buffer Tube Kit
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    SMITH DEFENSE - AR-10/308 Carbine Buffer Tube Kit

    $59.99
  • Magpul CTR Carbine Stock Mil-Spec - Black
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    Magpul CTR Carbine Stock Mil-Spec - Black

    $64.95
    $61.99
  • CMC 3.5 LBS. Curved Trigger
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    CMC 3.5 LBS. Curved Trigger

    $174.00
  • Magpul MOE Carbine Stock Mil-Spec - FDE
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    Magpul MOE Carbine Stock Mil-Spec - FDE

    $42.70
  • AR15 Detachable Carry Handle
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    AR15 Detachable Carry Handle

    $35.63
  • 80% Arms Can/Bottle Cooler
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    80% Arms Can/Bottle Cooler

    $1.99
  • MAGPUL STR CARB STOCK MIL-SPEC BLK
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    MAGPUL STR CARB STOCK MIL-SPEC BLK

    $80.70
  • OUT OF STOCK
    Holosun 2MOA Red Dot
    SOLD OUT

    Holosun 2MOA Red Dot

    $205.99
  • Aluminum Black Touch Up by Birchwood Casey
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    Aluminum Black Touch Up by Birchwood Casey

    $11.99
  • ZEV Fulcrum Complete Trigger Upgrade - 9mm
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    ZEV Fulcrum Complete Trigger Upgrade - 9mm

    $183.76
  • ZEV Fulcrum Adjustable Glock Trigger
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    ZEV Fulcrum Adjustable Glock Trigger

    $134.68
  • CMMG MK3 .308 Lower Parts Kit
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    CMMG MK3 .308 Lower Parts Kit

    $99.99
    $73.98
  • Glock Recoil Spring Assembly
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    Glock Recoil Spring Assembly

    $9.99
  • MAGPUL PMAG Magazine GLOCK 19 - 10R
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    MAGPUL PMAG Magazine GLOCK 19 - 10R

    $14.20
  • Trijicon HD XR Night Sights
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    Trijicon HD XR Night Sights

    $147.89
  • Trijicon Bright & Tough Night Suppressor Height Sight for Glock
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    Trijicon Bright & Tough Night Suppressor Height Sight for Glock

    $144.99
  • OUT OF STOCK
    Replacement Parts
    SOLD OUT

    Replacement Parts for Gen 1 AR-15 Easy Jig®

    $0.00
  • Trijicon RMR Type 2: 3.25 MOA, Adjustable
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    Trijicon RMR Type 2: 3.25 MOA, Adjustable

    $699.00
  • Trijicon RMR - Type 2: 3.25 MOA
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    Trijicon RMR - Type 2: 3.25 MOA

    $649.00
    $549.00
  • OUT OF STOCK
    AR-15 Quick Release Pins
    SOLD OUT

    AR-15 Quick Release Pins

    $9.95
  • OUT OF STOCK
    Quick Release Pins for Easy Jig® - Multiplatform
    SOLD OUT

    Quick Release Pins for Easy Jig® - Multiplatform

    $19.99
  • Bolt Catch Screw Kit
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    Bolt Catch Screw Kit

    $4.99
  • Ambi Safety Selector
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    Ambi Safety Selector

    $35.00
    $30.00
  • 0% Billet AR-15 Lower Receiver
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    0% Billet AR-15 Lower Receiver

    $69.99
  • Pistol Mat - TekMat
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    Pistol Mat - TekMat

    $13.99
  • AR9 HARDWARE SET - NO LEVER
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    AR9 HARDWARE SET - NO LEVER

    $7.99
  • AR9 HARDWARE SET - RAW
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    AR9 HARDWARE SET - RAW

    $20.00
  • BRN AR-15 Colt Style 9mm 32 Round Magazine
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    BRN AR-15 Colt Style 9mm 32 Round Magazine

    $39.99

A FULL LINE OF UPGRADES

Whether you built one of our Rifle Kits, or one of our 80% Pistols, no build is complete without making it truly yours. We don't just carry the best 80% Lowers and build kits in the industry, we also carry everything you need to make sure your new firearm will fit whatever role you need it to fill. Every tool is different, and we want to make sure you have what you need to accomplish your mission. No gun is complete without some magazines to feed it, and we also offer a variety of other upgrades:
 
Sights & Optics   Glock Upgrades  
Triggers   Conversion Kits  
 
In California? Make sure to check out our California Compliance Kit and California AR 15 Parts.
 

All Your 80% Lower Needs

Make sure you represent yourself as part of the 80% Army whenever you're at the range with some of our swag, and be the envy of your coworkers with one one of our desktop rifle kits. Just want to touch up and cover that bare aluminum inside your freshly milled lower? Grab a bottle of Aluminum Black to add some finishing touches.
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