Lower Parts
Looking to get new parts for your AR's lower receiver. This is the place to look, with hundreds of parts from stocks and grips to a new mag release button. Shop with Grid Defense to customize and build the best lower receiver you can. Make your firearm look, feel, and perform the best with our selection of OE and aftermarket parts.
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PISTOL GRIP LOCK WASHER - AR15
$1.99PISTOL GRIP LOCK WASHER - AR15 Compatible with AR15/M4/AR10 Lower Receivers American Made$1.99 -
Tactical Dynamics Skeleton Grip - Tactical Grape
$79.00Tactical Dynamics Skeleton Grip - Tactical Grape Finished in Purple Cerakote Machined from 7075-T6 Aluminum Durable and Lightweight Compatible with AR15/AR10 Platforms Unique Design Made in the USA$79.00 -
Sylvan Arms Folding Hinge Stock Adapter - Gen 3
$179.99The Sylvan Arms Folding Hinge Stock Adapter allows you to fold your stock and significantly reduce the length of your rifle for easy stow and travel.Specifically designed for gas piston and direct impingement systems 5.56 to .308 systems, as well as .223...$179.99 -
Complete Rifle Parts Kit - AR10
$119.00Complete AR10 Rifle Parts Kit AR10 Lower Parts Kit Trigger Group A2 Grip Buffer Retainer Pin Buffer Retainer Spring Trigger Guard Safety Selector Bolt Catch Spring Detent Spring Bolt Catch Plunger...$119.00 -
Magazine Catch and Button
$7.99MAGAZINE CATCH WITH BUTTON - AR15/M16 Magazine Catch Magazine Release Button Compatible with AR15/M4 Lower Receivers American Made$7.99 -
Tactical Dynamics Skeleton Stock - Blue Titanium
$109.00Tactical Dynamics Skeleton Stock Finished in Blue Titanium Cerakote Made in the USA Compatible with Milspec Carbine Buffer Tube Machined from 6061-T6 Aluminum Specs 6 3/4" Long 5 1/4" Contact Area 1 1/4" Wide 9.65oz$109.00 -
Creed Monarch AR15 H2 Carbine Buffer
$30.00AR15 H2 Carbine Buffer Made in the USA Machined from Top Quality Material Weighs 4.7oz Manufactured by Creed Monarch$30.00 -
Magpul Moe AR Grip - Black
Sale: $17.95MSRP: $20.95MAGPUL MOE GRIP - BLACK AR15/M4 Pistol Grip Reinforced Polymer Construction Beavertail Backstrap Anti Slip Texture 25 Degree Angle Grip Weighs 2.8ozSale: $17.95MSRP: $20.95 -
$9.99
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Magpul MOE Trigger Guard - OD Green
$8.95Magpul MOE Trigger Guard - OD Green Constructed from Advanced Polymer Compatible with the AR15/M4 Platform All Mounting Hardware Included Made in the USA$8.95 -
TRIGGER GUARD PIN - AR15
$1.99TRIGGER GUARD PIN Compatible with AR15/M4 Lower Receivers American Made$1.99 -
CMC AR-15 Match Trigger Flat Bow - 3.5LB
$189.99CMC AR-15 FLAT MATCH TRIGGER FEATURES Single Stage AR15 Match Trigger Multiple trigger pull weights Ultra-crisp trigger with no feel of creep prior to hammer release Trigger has glass-smooth break with no feel of grittiness Minimal lock time is...$189.99 -
Grid Defense Lower Pistol Build Kit Nickel Boron
$99.00Ghost Firearms Lower Pistol Build Kit Nickel Boron Nickel Boron Trigger Group A2 Grip Buffer Retainer Pin Buffer Retainer Spring Trigger Guard Safety Selector Bolt Catch Spring Detent Spring Bolt Catch...$99.00 -
STRIKE INDUSTRIES ULTRA LIGHT PIVOT / TAKEDOWN PINS - FDE
$16.95Strike Industries Ultra Light Pivot/Takedown pins - FDE Extended Grasping Service Extended Pivot Pin / 1.31" Length Extended Takedown Pin / 1.08" length Ultra light and Ultra Strong Construction For AR15 Lowers FDE Finish$16.95 -
Creed Monarch AR15 H3 Carbine Buffer
$40.00AR15 H1 Carbine Buffer Made in the USA Machined from Top Quality Material Weighs 5.0oz Manufactured by Creed Monarch$40.00 -
Skeletonized Elite Trigger Guard
$24.99Premium Skeletonized Elite Trigger Guard This Skeletonized trigger guard is the premium option from the Vital trigger guard that comes standard with all completed lowers. With it's slim design, it offers coverage where it is needed serving its...$24.99 -
Tactical Dynamics Skeleton Stock - Tungsten Gray
$109.00Tactical Dynamics Skeleton Stock Finished in Tungsten Gray Cerakote Made in the USA Compatible with Milspec Carbine Buffer Tube Machined from 6061-T6 Aluminum Specs 6 3/4" Long 5 1/4" Contact Area 1 1/4" Wide 9.65oz$109.00 -
Magpul MOE AR15/M4 Pistol Grip - OD Green
$20.95Magpul MOE AR15/M4 Pistol Grip - OD Green Made in U.S.A. Features Replacement for AR15/M4 pistol-grip* One-piece reinforced polymer construction Beavertail backstrap for enhanced ergonomics Positive anti-slip texture Includes a basic grip...$20.95 -
MIL-SPEC CARBINE BUFFER TUBE - TEQUILA SUNRISE
$30.00MIL-SPEC CARBINE BUFFER TUBE - TEQUILA SUNRISE Made in the USA Compatible with M4 Type Butt Stocks 6 Position Machined from 7075-T6 Aluminum Weight: 3.6oz Tequila Sunrise Cerakote Finish$30.00 -
Creed Monarch AR15 Heavy Carbine Buffer
$23.00AR15 H1 Carbine Buffer Made in the USA Machined from Top Quality Material Weighs 3.8oz Manufactured by Creed Monarch$23.00