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 Grip - Tungsten Gray
$79.00Tactical Dynamics Skeleton Grip - Tungsten Gray Finished in Tungsten Gray Cerakote Machined from 7075-T6 Aluminum Durable and Lightweight Compatible with AR15/AR10 Platforms Unique Design Made in the USA$79.00 -
Ghost Firearms Complete Lower Pistol Build Kit
$89.99Ghost Firearms Complete Lower Pistol Build Kit Trigger Group A2 Grip Buffer Retainer Pin Buffer Retainer Spring Trigger Guard Safety Selector Bolt Catch Spring Detent Spring Bolt Catch Plunger Bolt...$89.99 -
Grid Defense Pistol Stabilizing Fin Assembly
$79.99Grid Defense Pistol Stabilizing Brace Assembly Pistol Buffer Tube Castle Nut End Plate Buffer Buffer Spring Pistol Stabilizing Blade (Constructed from Reinforced Polymer)$79.99 -
Grid Defense Pistol Stabilizing Fin
$39.99Grid Defense Pistol Stabilizing Fin -Constructed from Reinforced Polymer -Increases Weapon Control and Stability -Weighs 5.7oz -Fits Pistol Buffer Tube up to 1.25" (Not Included)$39.99 -
$2.99
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Ghost Grip - Black
$15.99The 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...$15.99 -
VITAL TRIGGER GUARD - BURNT BRONZE
$15.99VITAL AR 15 TRIGGER GUARD - BURNT BRONZE 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...$15.99 -
Creed Monarch 9mm Steel Buffer
$29.009mm Steel Buffer Heavy to soften felt recoil on semi-automatic and full automatic guns 9mm Carbine Buffer 5.3oz$29.00 -
Magpul MOE Plus AR Grip - Black
$23.95Magpul MOE Plus AR Grip - Black AR15/M4 Pistol Grip Beavertail Backstrap Anti Slip Texture Reinforced Polymer Construction 25 Degree Angle Grip Weighs 3.4oz Made in the USA$23.95 -
Pistol Buffer Tube Assembly - AR15
$30.00PISTOL BUFFER TUBE ASSEMBLY Made in the USA 1.25" Outer Diameter Machined from 7075-T6 Aluminum End Plate Castle Nut Carbine Buffer Spring Carbine Buffer Hard Coat Black Anodized Finish$30.00 -
Tactical Dynamics Skeleton Grip - OD Green
$79.00Tactical Dynamics Skeleton Grip - OD Green Finished in Magpul Olive Drab Green Machined from 7075-T6 Aluminum Durable and Lightweight AR Skeleton Pistol Grip. Compatible with AR15/AR10 Platforms Unique Design Made in the USA$79.00 -
Magpul MOE AR Grip - Flat Dark Earth
Sale: $17.95MSRP: $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 2.8ozSale: $17.95MSRP: $20.95 -
Tactical Dynamics Skeleton Stock - Black
$109.00Tactical Dynamics Skeletonized Stock Made in the USA Black Cerakote 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$109.00 -
PISTOL GRIP SCREW - AR15
$2.99PISTOL GRIP SCREW - AR15 Compatible with AR15/M4/AR10 Lower Receivers American Made$2.99 -
Grid Defense Nickel Boron Fire Control Group
$39.00Grid Defense Nickel Boron Fire Control Group Nickel Boron Disconnect Nickel Boron Trigger Nickel Boron Hammer Compatible with AR15/AR10$39.00 -
Mil-Spec Lower Parts Rifle Kit Nickel Boron
$99.00Includes: Lower Parts Kit with NiB Fire Control Group Nickel Boron Trigger Group A2 Grip Buffer Retainer Pin Buffer Retainer Spring Trigger Guard Safety Selector Bolt Catch Spring Detent Spring Bolt...$99.00 -
VITAL TRIGGER GUARD - TUNGSTEN GRAY
$15.99Vital Trigger Guard - Tungsten Gray 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 -
STRIKE INDUSTRIES ULTRA LIGHT PIVOT / TAKEDOWN PINS - BLACK
$15.95STRIKE INDUSTRIES ULTRA LIGHT PIVOT/TAKEDOWN PINS - BLACK Finished in Anodized Black Extended grasping surface Extended pivot pin / 1.31" length Extended takedown pin /1.08" length For AR-15 lowers Ultra light and ultra strong construction$15.95 -
STRIKE INDUSTRIES ULTRA LIGHT PIVOT / TAKEDOWN PINS - RED
$16.95STRIKE INDUSTRIES PARTS - ULTRA LIGHT AR 15 RED TAKEDOWN PINS Billet 7075 aluminum Red Finish Extended grasping surface Extended pivot pin / 1.31" length Extended takedown pin /1.08" length For AR-15 lowers Ultra light and ultra strong...$16.95 -
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