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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Tactical Dynamics Skeleton Stock - Raw
$99.00Tactical Dynamics Skeletonized Stock Made in the USA Raw Finish Machined from 6061-T6 Aluminum Minimalist Stock Compatible with Milspec Carbine Buffer Tubes Specs 6 3/4" Long 5 1/4" Contact Area 1 1/4" Wide 9.65oz$99.00 -
TIMBER CREEK ENFORCER AR PISTOL GRIP - BURNT BRONZE
$99.99TIMBER CREEK ENFORCER AR PISTOL GRIP - BURNT BRONZE Drop in replacement grip Mounts to any standard milspec lowers Skeletonized and lightweight Made in the USA$99.99 -
MIL-SPEC CARBINE BUFFER TUBE - TACTICAL GRAPE
$30.00MIL-SPEC CARBINE BUFFER TUBE - TACTICAL GRAPE Made in the USA Compatible with M4 Type Butt Stocks 6 Position Machined from 7075-T6 Aluminum Weight: 3.6oz Tactical Grape Cerakote Finish$30.00 -
MIL-SPEC PISTOL BUFFER TUBE - ZOMBIE GREEN
$25.00MIL-SPEC PISTOL BUFFER TUBE - ZOMBIE GREEN Made From: Forged 7075 aluminum Zombie Green Cerakote Finish **Buffer, Castle Nut, End Plate Not Included**$25.00 -
Palmetto State Armory SB Tactical SBA3 Pistol Brace - Black
$129.00Palmetto State Armory SB Tactical Stabilizing Pistol Brace for the AR15 - Black Palmetto State Armory Branded US Veteran Designed 5 Position Adjustable Ambi QD Mount Minimalist Design ATF Compliant Made in the USA$129.00 -
PSA SB Tactical SBA3 Stabilizing Brace Assembly - Black
$169.00Palmetto State Armory SB Tactical Stabilizing Pistol Brace for the AR15 - Black Palmetto State Armory Branded US Veteran Designed Includes 7075 Milspec Carbine Buffer Tube Carbine Buffer Buffer Spring End Plate Castle Nut 5 Position...$169.00 -
STRIKE INDUSTRIES AMBI MAGAZINE RELEASE - FDE
$39.95Strike Industries AMBI Magazine Release Made in USA Low Profile and Ergonomically Designed Includes Enhanced Magazine Release Button and Spring for Complete Drop-in Upgrade Ambidextrous for The Left and Right Handed Shooters Manufactured by Strike...$39.95 -
Strike Industries Extended Pivot/Takedown Pins - Gold Coating
$15.95Strike Industries Extended Pivot/Takedown Pins - Gold Coating Strike industries extended takedown pins and pivot pins are ideal for shooters looking for a custom look and that run multiple upper receivers off of a single lower. Made out of...$15.95 -
TIMBER CREEK AR MAGAZINE RELEASE BUTTON - OLIVE DRAB GREEN
$7.99AR MAGAZINE RELEASE BUTTON - OD GREEN Manufactured by Timber Creek Outdoors Machined from billet aluminum Made in the USA Olive Drab Green Cerakote Finish$7.99 -
TIMBER CREEK AR MAGAZINE RELEASE BUTTON - TUNGSTEN
$7.99AR MAG RELEASE BUTTON - MAGAZINE CATCH BUTTON - TUNGSTEN Tungsten Gray Cerakote finish Compatible with all Milspec lowers Lightweight aluminum Made in the USA$7.99 -
MIL-SPEC CARBINE BUFFER TUBE - OD GREEN
$30.00MIL-SPEC CARBINE BUFFER TUBE - OD GREEN Made in the USA Compatible with M4 Type Butt Stocks 6 Position Machined from 7075-T6 Aluminum Weight: 3.6oz OD Green Cerakote Finish$30.00 -
SKELETONIZED ELITE TRIGGER GUARD - BURNT BRONZE
$25.99PREMIUM SKELETONIZED ELITE TRIGGER GUARD - BURNT BRONZE 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...$25.99 -
TIMBER CREEK ENFORCER AR PISTOL GRIP - BLACK
$99.99ENFORCER AR PISTOL GRIP - BLACK Weighs 4oz. Skeletonized grip Cerakote finish Manufactured by Timber Creek Outdoors Inc.$99.99 -
TIMBER CREEK ENFORCER AR PISTOL GRIP - BLUE
$99.99TIMBER CREEK ENFORCER AR PISTOL GRIP - BLUE Blue anodized with clear cerakote finish Drop in replacement mounts to standard lower receiver lightweight Skeletonized grip$99.99 -
Ghost Grip - FDE
$19.99The Ghost Grip is designed for Made In the USA Made From: reinforced Plastic composite Slim Lightweight Design Incorporates finger groves to insure a tight and comfortable hold Ghost "G" Engraved into the left hand side of...$19.99 -
Ghost Grip - Ridgeway Blue
$19.99The Ghost Grip is designed for Made In the USA Made From: reinforced Plastic composite Slim Lightweight Design Incorporates finger groves to insure a tight and comfortable hold Ghost "G" Engraved into the left hand side of...$19.99 -
MIL-SPEC CARBINE BUFFER TUBE - PINK CHAMPAGNE
$30.00MIL-SPEC CARBINE BUFFER TUBE - PINK CHAMPAGNE Made in the USA Compatible with M4 Type Butt Stocks 6 Position Machined from 7075-T6 Aluminum Weight: 3.6oz Pink Champagne Cerakote Finish$30.00 -
SKELETONIZED ELITE TRIGGER GUARD - TUNGSTEN GRAY
$25.99PREMIUM SKELETONIZED TRIGGER GUARD - TUNGSTEN GRAY ELITE AR15 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...$25.99 -
STRIKE INDUSTRIES AMBI MAGAZINE RELEASE - BLACK
$41.95Strike Industries AMBI Magazine Release Made in USA Low Profile and Ergonomically Designed Includes Enhanced Magazine Release Button and Spring for Complete Drop-in Upgrade Ambidextrous for The Left and Right Handed Shooters Manufactured by Strike...$41.95 -
TIMBER CREEK AMBIDEXTROUS SAFETY SELECTOR - OLIVE DRAB GREEN
$39.99AMBIDEXTROUS SAFETY SELECTOR - OD GREEN Left or right hand shooters Manufactured in USA Aircraft grade aluminum Drop in replacement part for OEM safety selector ...$39.99