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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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 -
Out of stockOn Sale
Ghost Grip - Tungsten Gray
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 Lower Parts Kit with Fin
$129.98Grid Defense Pistol Lower Parts Kit with Fin Grid 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) PISTOL BUFFER TUBE...$129.98 -
Out of stockOn Sale
TIMBER CREEK AR EXTENDED MAGAZINE RELEASE - BLACK
Sale: $16.99MSRP: $19.99AR EXTENDED MAGAZINE RELEASE - BLACK Made in the USA Aircraft grade billet aluminum Manufactured by Timber Creek Outdoors Available in a variety of colorsSale: $16.99MSRP: $19.99 -
Out of stock
Ergo SureGrip AR Grip Kit A/T Black
$25.99Ergo Suregrip AR Grip Kit A/T Black Black in 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 -
On Sale
Grid Defense Billet AR-15 80% Lower Receiver With Optional Fire/Safe and Magwell Engravings
Sale: $60.99MSRP: $199.00Grid Defense Billet AR-15 80% Lower Receiver Machined from 6061-T6 Billet Aluminum Made in house in the USA Flared and Broached Magwell Optional Fire/Safe and Magazine Well Engravings Can be used for Multiple Calibers .223/5.56/300BLK/9mm/7...Sale: $60.99MSRP: $199.00 -
Out of stock
Rise Armament Rave Single Stage Trigger with Lower Parts Kit - Black
$180.00Rise Armament Rave Single Stage Trigger with Lower Parts Kit - Black No take-up —Quik-Klik reset you can feel Elementary installation — no set screws to tighten Single stage, 3.5-lb. pull weight Includes anti-walk pins for worry-free...$180.00 -
Out of stock
Tactical Dynamics Skeleton Grip - Raw Aluminum
$69.00Tactical Dynamics Skeleton Grip - Raw Aluminum Raw Aluminum Finish Machined from 7075-T6 Aluminum Durable and Lightweight Compatible with AR15/AR10 Platforms Unique Design Made in the USA$69.00 -
Out of stock
TIMBER CREEK AR TAKEDOWN PIN SET - BLACK
$19.99AR TAKEDOWN PIN SET - BLACK Made in the USA Machined from Billet Aluminum Compatible with Milspec AR15/M4 Lower Receivers Anodized Finish These CNC machined pins are drop in replacements for milspec lowers and allow easier disassembly of your...$19.99 -
On Sale
Blem AR-15 80% Fire/Safe Lower Receiver With Mil-Spec Upper Receiver - FDE Anodize
Sale: $90.00MSRP: $244.95Blem AR-15 80% Fire/Safe Lower Receiver With Mil-Spec Upper Receiver - FDE Anodize AR-15 80% Fire/Safe Lower Receiver Machined from 7075-T6 Aluminum Forging FDE Hard Coat Anodize Flared and broached magazine well Rear upper lug pocket cut...Sale: $90.00MSRP: $244.95 -
Out of stockOn Sale
DPMS AR-10 Takedown Pin Set - Black
Sale: $4.85MSRP: $9.95DPMS AR-10 Takedown Pin Set - Black Made of high-quality steel Black oxide finish for corrosion resistance Easy to install Compatible with DPMS pattern AR-10/308 rifles Reliable and durable Easy to install Compatible with DPMS pattern AR-10/308...Sale: $4.85MSRP: $9.95 -
Out of stockOn Sale
Grid Defense AR-10 80% Billet Lower Receiver Without Fire/Safe - Burnt Bronze
Sale: $100.00MSRP: $250.00Grid Defense AR-10 80% Lower Receiver Without Fire/Safe - Burnt Bronze Machined from 6061-T6 Billet Aluminum Made in house in the USA Flared and Broached Magwell Finished in Burnt Bronze Cerakote Does not have Fire/Safe Makings Compatible with...Sale: $100.00MSRP: $250.00 -
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 -
Out of stock
ODIN Works AR-15 Adjustable Buffer
$49.00ODIN Works AR-15 Adjustable Buffer Lite Buffer made from Aluminum Weights included for different weight combinations AR15 comes with 3 aluminum, 3 stainless steel and 1 tungsten weights ODIN Works is always looking for new ways to make your build...$49.00 -
Phase5 Weapon Systems Ambidextrous 90 Degree Safety Selector - Black
$45.00Phase5 Weapon Systems Ambidextrous 90 Degree Safety Selector - Black Fits AR-15 and AR-10 / LR-308 6061-T6 Billet Aluminum Ambidextrous Wide Levers$45.00 -
Strike Industries Extended Bolt Catch - Black
$16.95Strike Industries Extended Bolt Catch - Black Wide surface area "ping pong paddle" for faster operation Solid Investment Cast8620 construction Widened Bolt Catch Lower Lever Compatible with AR-15 Style Lower$16.95 -
Out of stock
TIMBER CREEK AR EXTENDED MAGAZINE RELEASE - OD GREEN
$19.99AR EXTENDED MAGAZINE RELEASE - OLIVE DRAB GREEN Aircraft grade billet aluminum OD Green Cerakote Finish Made in the USA Manufactured by Timber Creek Outdoors Inc. OD Green Mag Release$19.99 -
Out of stock
TIMBER CREEK AR OVERSIZED TRIGGER GUARD - BURNT BRONZE
$23.99AR OVERSIZED TRIGGER GUARD - BURNT BRONZE Burnt Bronze Cerakote Lightweight 0.4oz Oversized Drop in Trigger Guard Manufactured by Timber Creek Outdoors$23.99 -
Out of stock
TIMBER CREEK AR OVERSIZED TRIGGER GUARD - OD GREEN
$23.99AR OVERSIZED TRIGGER GUARD - OLIVE DRAB GREEN Weight 0.4oz OD Green Extra room around trigger Replacement trigger guard manufactured by Timber Creek Outdoors, Inc$23.99 -
Out of stockOn Sale
Grid Defense AR-15 80% Lower Receiver Without Fire/Safe Engravings - Tungsten Gray
Sale: $60.00MSRP: $170.00Grid Defense AR-15 80% Lower Receiver without Fire/Safe Engravings - Tungsten Gray Machined from 7075-T6 Aluminum Forging Finished in Tungsten Gray Cerakote Flared and broached magazine well Rear upper lug pocket cut out Fits all mil-spec upper...Sale: $60.00MSRP: $170.00