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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Elftmann Tactical 3 Gun Trigger - Curved
$279.00Elftmann 3 Gun Trigger | Mil-spec AR-15 Trigger Features Fits any mil-spec AR-15 (Large pin Colt available) Absolutely Drop-Safe regardless of pull-weight Factory set Pull-weight is...$279.00 -
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"...Sale: $8.99MSRP: $19.99 -
Out of stockOn Sale
Grid Defense AR-15 80% Lower Receiver With Trump 45-47 Magwell Engraving
Sale: $65.00MSRP: $150.00Grid Defense AR-15 80% Lower Receiver With Optional Fire/Safe Engravings Machined from 7075-T6 Aluminum Forging Flared and broached magazine well Rear upper lug pocket cut out Fits all mil-spec...Sale: $65.00MSRP: $150.00 -
Out of stockOn Sale
Grid Defense AR-15 80% Lower Receiver Without Fire/Safe Engravings - OD Green
Sale: $69.00MSRP: $170.00Grid Defense AR-15 80% Lower Receiver without Fire/Safe Engravings - OD Green Machined from 7075-T6 Aluminum Forging Finished in OD Green Cerakote Flared and broached magazine well Rear upper...Sale: $69.00MSRP: $170.00 -
KNS Non Rotating Trigger/Hammer Pins .154 G2
$29.00KNS Non Rotating Trigger/Hammer Pins .154 G2 Non Rotating Hammer and Trigger Pins .154 Diameter Black Finish Compatible with Milspec AR15 Receivers$29.00 -
Magpul MOE AR15 Grip - Gray
$20.95Magpul MOE AR15 Grip - Gray One-piece reinforced polymer construction Beavertail backstrap for enhanced ergonomics Positive anti-slip texture Accepts optional Storage Cores$20.95 -
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...$44.95 -
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...Sale: $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-...$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...$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$19.99 -
Out of stock
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...$84.99 -
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...Sale: $89.00MSRP: $179.00 -
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...$21.99 -
Out of stock
Rise Armament RAVE Super Sporting Trigger - Flat Bow
$149.99Rise Armament RAVE Super Sporting Trigger - Flat Bow Precise Manufacturing Long Term Reliability Durable Construction 3.5 lb pull weight Single Stage Trigger$149.99 -
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...$43.95 -
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...$19.99 -
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...$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...$69.95