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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Out of stockOn Sale
Tactical Dynamics Skeleton Grip - FDE
Sale: $69.00MSRP: $79.00Tactical Dynamics Skeleton Grip - Flat Dark Earth Finished in Magpul FDE Cerakote Machined from 7075-T6 Aluminum Durable and Lightweight Compatible with AR15/AR10 Platforms Unique Design Made in the USASale: $69.00MSRP: $79.00 -
Magpul MOE AR Grip - Flat Dark Earth
$20.95Magpul MOE Grip - Flat Dark Earth AR15/M4 Pistol Grip Flat Dark Earth Reinforced Polymer Construction Beavertail Backstrap Anti Slip Texture 25 Degree Angle Grip Weighs 2.8oz$20.95 -
Out of stock
Magpul MOE Trigger Guard - FDE
$8.95Magpul MOE Trigger Guard - Flat Dark Earth Constructed from Advanced Polymer Compatible with the AR15/M4 Platform All Mounting Hardware Included Made in the USA$8.95 -
Grid Defense Mil-Spec Carbine Buffer Tube Assembly - FDE
$40.00Grid Defense Mil-Spec Carbine Buffer Tube Kit - FDE Made in the USA Compatible with M4 Type Butt Stocks 6 Position Carbine Buffer Tube Machined from 7075-T6 Aluminum End Plate Castle Nut Carbine Buffer Spring Carbine Buffer Weight: 9...$40.00 -
On Sale
Grid Defense AR-15 80% Lower Receiver Without Fire/Safe Engravings - FDE
Sale: $69.00MSRP: $170.00Grid Defense AR-15 80% Lower Receiver without Fire/Safe Engravings - FDE Machined from 7075-T6 Aluminum Forging Finished in Magpul Flat Dark Earth Cerakote Flared and broached magazine well Rear upper lug pocket cut out Fits all mil-spec upper...Sale: $69.00MSRP: $170.00 -
Out of stockOn Sale
SB Tactical SBA3 Adjustable Pistol Brace With Grid Defense Buffer Tube Kit - FDE
Sale: $119.95MSRP: $169.95SBA3 With Grid Defense Buffer Kit - FDE SB Tactical SBA3 Pistol Stabilizing Brace - Flat Dark Earth Complete Grid Defense Buffer Tube Assembly Kit Carbine buffer (3 oz) Carbine buffer spring Carbine stock end plate Carbine stock lock...Sale: $119.95MSRP: $169.95 -
On Sale
Tactical Dynamics Skeleton Stock - FDE
Sale: $56.00MSRP: $109.00Tactical Dynamics Skeleton Stock Finished in Magpul Flat Dark Earth 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 9.65ozSale: $56.00MSRP: $109.00 -
Adaptive Tactical EX Performance Stock - FDE
$59.99Adaptive Tactical EX Performance Stock - FDE Designed for owner installation Covered take down pin makes installation and removal easier and eliminates discomfort M4-style stock with adjustable length-of-pull Easy to reach rapid adjust...$59.99 -
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 -
MAGPUL MOE STOCK MILSPEC - Flat Dark Earth
$44.95Magpul Moe Stock MilSpec - Flat Dark Earth Made in the USA Weighs 8.0oz Length - 6.9" LOP Adjustment Range - 3.3 inch Sling Mounts (Rear/Bottom 1.25" Sling Loops|Toe-Lanyard Hole for Custom Para Cord Rigs) Compatible with Magpul ASAP/ASAP QD and...$44.95 -
Out of stockOn Sale
Grid Defense AR-10 80% Billet Lower Receiver Without Fire/Safe - FDE
Sale: $100.00MSRP: $250.00Grid Defense AR-10 80% Lower Receiver Without Fire/Safe - FDE Machined from 6061-T6 Billet Aluminum Made in house in the USA Flared and Broached Magwell Finished Magpul FDE Cerakote Does not have Fire/Safe Makings Compatible with DPMS...Sale: $100.00MSRP: $250.00 -
Magpul MOE Plus AR Grip - FDE
$24.95Magpul MOE Plus AR Grip FDE AR15/M4 Pistol Grip Beavertail Backstrap Anti Slip Texture Reinforced Polymer Construction 25 Degree Angle Grip Weighs 3.4oz Made in the USA$24.95 -
Magpul CTR Carbine Stock - FDE
$64.95Magpul CTR Carbine Stock - FDE Made in U.S.A. FEATURES Mounts on mil-spec sized carbine receiver extension tube (not included) from manufacturers such as Colt, Armalite, S&W, LMT, and others (please see the note below) Supplemental friction...$64.95 -
VITAL TRIGGER GUARD - FLAT DARK EARTH
$15.99Vital Trigger Guard - Flat Dark Earth With it's slim design, it offers coverage where it is needed serving its purpose: but yet not getting in the way when inquiring your target. Material: Plastic Weight: 1.54oz Includes: Pin & Allen Set...$15.99 -
On Sale
AR-15 Pistol Buffer Tube Assembly - FDE
Sale: $29.99MSRP: $35.00PISTOL BUFFER TUBE ASSEMBLY - FDE Made in the USA 1.25" Outer Diameter Machined from 7075-T6 Aluminum End Plate Castle Nut Carbine Buffer Spring Carbine Buffer Finished in FDE CerakoteSale: $29.99MSRP: $35.00 -
Out of stock
UTG PRO AMIBDEXTROUS AR-15 GRIP - FDE
$16.97UTG PRO AMIBDEXTROUS AR-15 GRIP - FDE Flat dark earth finish Polymer grip with finger grooves Compatible with most ambidextrous safety levers Fits AR-15$16.97 -
Adaptive Tactical Lightweight Tactical Grip - FDE
$17.99Adaptive Tactical Lightweight Tactical Grip - FDE AR-15/M-16/M4 Pistol Grip Constructed from High Grade Reinforced Polymer One Piece Construction Non-Conductive Ergonomic Aggressive Design Lightweight and Durable Improved...$17.99 -
Grid Defense Pistol Lower Parts Kit with Fin - FDE
$129.98Grid Defense Pistol Lower Parts Kit with Fin - FDE Grid Defense Pistol Stabilizing Fin - FDE -Finished in Magpul Flat Dark Earth Cerakote -Constructed from Reinforced Polymer -Increases Weapon Control and Stability -Weighs 5.7oz -Fits Pistol...$129.98 -
TIMBER CREEK AR OVERSIZED TRIGGER GUARD - FLAT DARK EARTH
$23.99OVERSIZED AR TRIGGER GUARD - FLAT DARK EARTH Lightweight 0.4oz. Drop in replacement More space large or gloved hand Manufactured BY Timber Creek Outdoors, Inc.$23.99 -
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