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
SB Tactical SBA4 Adjustable Pistol Brace With Grid Defense Buffer Tube Kit - FDE
Sale: $119.95MSRP: $169.95SBA4 with Grid Defense Buffer Kit - FDE SB Tactical SBA4 Pistol Stabilizing Brace Complete Grid Defense Buffer Tube Assembly Kit Carbine buffer (3 oz) Carbine buffer spring Carbine stock end plate Carbine stock lock ring-castle nutSale: $119.95MSRP: $169.95 -
Out of stock
Strike Industries AR Flip Switch - FDE
$43.95Strike Industries AR Flip Switch - FDE Package includes:- 2x Shaft Screw- 1x 60/90 Shaft- 1x End Cap- 1x Right Side Flip Switch- 1x Left Side Flip Switch Features- Ambidexterous- Ergonomic Shape- Modular Assembly- Strike 60/90 Option Note: Not...$43.95 -
Out of stock
TACTICAL DYNAMICS SKELETON GRIP - ROBINS EGG
$79.00Tactical Dynamics Skeleton Grip - Robins Egg Finished in Robins Egg Cerakote Machined from 7075-T6 Aluminum Durable and Lightweight Compatible with AR15/AR10 Platforms Unique Design Made in the USA$79.00 -
Out of stock
TIMBER CREEK AMBIDEXTROUS SAFETY SELECTOR - RED
$39.99AMBIDEXTROUS SAFETY SELECTOR - RED Lightweight material Made in the USA Multiple configurations for shooters Manufactured by Timber Creek Outdoors Inc.+ Red Anodized Finish$39.99 -
Out of stock
TIMBER CREEK AR TAKEDOWN PIN SET - FLAT DARK EARTH
$19.99AR TAKEDOWN PIN SET - FLAT DARK EARTH Compatible with Milspec AR15/M4 Lower Receivers Made in the USA Machined from billet aluminum Cerakote finish These CNC machined pins are drop in replacements for Mil-Spec lowers and allow easier...$19.99 -
Out of stockOn Sale
Grid Defense AR-9 80% Lower Receiver Without Fire/Safe Engravings - FDE
Sale: $89.00MSRP: $179.00Grid Defense AR-9 80% Lower Receiver - FDE Finished in Magpul FDE Cerakote Machined from 6061 billet aluminum Compatible with any Glock style small frame pistol calibers Compatible with Glock pattern or style magazines Magazine release button and...Sale: $89.00MSRP: $179.00 -
MAGPUL MOE CARBINE STOCK - GRAY
$44.95Magpul MOE Carbine Stock - Gray Made in the USA Mounts on Mil-Spec Carbine Receiver Weight: 8.0oz Compatible with Magpul ASAP, ASAP QD and other Receiver Mount Sling Attachments Sloping Cheek Weld Shielded Release Latch to Prevent Snagging Side...$44.95 -
Phase5 Oversized Magazine Release - Black
$21.99Phase5 Oversized Magazine Release - Black Made in the USA Compatible with AR15/AR10 Receivers Compatible with Anti-Rotation Trigger/Hammer Pin Sets Compatible with Extended Bolt Releases Machined from Billet Aluminum Larger Contact Surface than a...$21.99 -
Out of stock
STRIKE INDUSTRIES AMBI MAGAZINE RELEASE - RED
$43.95Strike 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...$43.95 -
STRIKE INDUSTRIES MAGAZINE CATCH - FDE
$18.95STRIKE INDUSTRIES MAGAZINE CATCH - FDE Enhanced Magazine Catch: Steel 6061-T6 Aluminum Release Button Solid Billet Aluminum Construction Unique Anodized Colors FDE Finish$18.95 -
Out of stock
TIMBER CREEK QD END PLATE - FLAT DARK EARTH
$19.99QD END PLATE - FLAT DARK EARTH Cerakote finish Aircraft grade billet aluminum Made in the USA Accomodates right and left hand shooters Quick Disconnect End Plate replaces the standard AR end plate and adds a mounting point for QD sling swivels.$19.99 -
Armaspec Superlight AR-15 Lower Parts Kit - Red
$84.99Armaspec Superlight AR-15 Lower Parts Kit - Red Includes Armaspec Enhanced Lower Parts Compatible with most AR-15 lowers Made in the U.S.A. Lifetime warranty AR-15 lower receiver 1x Armaspec SFT 45/90 Safety Selector 1x Bolt Catch 1x...$84.99 -
Battle Arms Development EMMR Large Enhanced Modular Magazine Release
$35.95BAD-EMMR Large Enhanced Modular Magazine Release BAD-EMMR-L (Enhanced Modular Magazine Release - Large Finger Pad) for the AR15/AR10. Precision CNC Machined for billet 7075-T6 Aluminum, the BAD-EMMR features, unique, patent-pending three...$35.95 -
Out of stock
Ergo SureGrip AR Grip Kit A/T - Desert Tan
$25.99Ergo Suregrip AR Grip Kit A/T DE Desert Tan Color AR15/AR10 Pistol Grip Rear Upper Extension Supports the Web of Your Hand Finger Grooves Aggressive Texture for Improved Control Includes the Patented Grapper for Increased Comfort Over-Molded...$25.99 -
FORTIS SLS FIFTY SAFETY SELECTOR - GOLD
$69.95FORTIS SLS FIFTY SAFETY SELECTOR - GOLD Precise Manufacturing Long Term Reliability Durable Construction High quality components and precise manufacturing make Fortis parts ideal for maintaining and upgrading firearms. The durability, reliability...$69.95 -
Out of stockOn Sale
Ghost Grip - Titanium
Sale: $8.99MSRP: $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...Sale: $8.99MSRP: $19.99 -
Out of stockOn Sale
Ghost Grip - Zombie Green
Sale: $8.99MSRP: $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...Sale: $8.99MSRP: $19.99 -
Grid Defense Pistol Stabilizing Fin - Blue Titanium
$49.99Grid Defense Pistol Stabilizing Fin - Blue Titanium -Constructed from Reinforced Polymer -Increases Weapon Control and Stability -Weighs 5.7oz -Fits Pistol Buffer Tube up to 1.25" (Not Included) -Finished in Blue Titanium Cerakote$49.99 -
Patriot Ordnance Factory Ambidextrous Safety Selector 50/90 Degree
$62.38Patriot Ordnance Factory Ambidextrous Safety Selector Safety Selector Ambidextrous For Left And Right Handed Shooters 50/90 Degree Manufactured By Patriot Ordinance Factory Made In The USA$62.38 -
Rise Armament Advanced Performance Trigger - Black
$259.99Rise Armament Advanced Performance Trigger Single-stage AR trigger Lightning fast Quik-Klik reset you can feel and hear for rapid follow-up shots Lightened trigger pull with icicle-crisp break to improve accuracy Combines straight trigger...$259.99