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 stock
TACTICAL DYNAMICS SKELETON GRIP - TEQUILA SUNRISE
$79.00Tactical Dynamics Skeleton Grip - Tequila Sunrise Machined from 7075-T6 Aluminum Durable and Lightweight Compatible with AR15/AR10 Platforms Unique Design Made in the USA Tequila Sunrise Cerakote Finish$79.00 -
Out of stock
TIMBER CREEK ENFORCER AR PISTOL GRIP - BURNT BRONZE
$99.99TIMBER CREEK ENFORCER AR PISTOL GRIP - BURNT BRONZE Drop in replacement grip Mounts to any standard milspec lowers Skeletonized and lightweight Made in the USA$99.99 -
Out of stock
Battle Arms Development BAD-ASS PRO Ambi Safety Selector - Full Auto
$60.00Battle Arms Development BAD-ASS PRO Ambi Safety Selector - Full Auto Specifications: SKU: BAD-ASS-PRO-FA UPC: 810033782619 Manufacturer: Battle Arms Development, Inc. Center Material/Finish: Swiss CNC Machined Bar-Stock Steel Core, Hardened, Black...$60.00 -
Battle Arms Development Mil-Spec Carbine Buffer 3.0oz
$12.00Battle Arms Development Mil-Spec Carbine Buffer 3.0oz Mil-Spec Buffer for use in AR15/M16 carbines with a collapsible stock Perfect for your build or direct replacement for worn out parts Carbine weight, 3oz$12.00 -
Out of stock
Elftmann Ambi Speed Safety - Stainless Steel
$39.95Elftmann Ambi Speed Safety - Stainless Steel Made in the USA Ambidextrous Safety Selector Push Safety Design Includes Detent Extremely Fast On-Off Stainless Steel Mil-Spec Compatible Works with AR15/AR10$39.95 -
Out of stockOn Sale
Grid Defense AR-9 80% Lower Receiver Without Fire/Safe Engravings - OD Green
Sale: $89.00MSRP: $179.00Grid Defense AR-9 80% Lower Receiver - OD Green Finished in OD Green 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...Sale: $89.00MSRP: $179.00 -
Out of stockOn Sale
Grid Defense AR-9 80% Lower Receiver Without Fire/Safe Engravings - Tungsten Gray
Sale: $89.00MSRP: $179.00Grid Defense AR-9 80% Lower Receiver - Tungsten Gray Finished in Tungsten Gray Cerakote Machined from 6061 billet aluminum Compatible with any Glock style small frame pistol calibers Compatible with Glock pattern or style magazines Magazine...Sale: $89.00MSRP: $179.00 -
On Sale
Mission First Tactical Battlelink Utility Stock - Black
Sale: $58.49MSRP: $64.99Mission First Tactical Battlelink Utility Stock - Black Black finish Slide-on replacement for collapsible butt stock MilSpec Buffer Tube Angled non-slip rubberized buttpad Fits AR rifles Fits 6 Position TubesSale: $58.49MSRP: $64.99 -
Odin Works Enhanced AR15 Lower Parts Kit
$59.00Odin Works Enhanced AR15 Lower Parts Kit 31 piece set to complete a lower Major Parts are Nitride Coated Winter trigger guard$59.00 -
SPIKE'S ST-9X 9MM HEAVY BUFFER
$49.95SPIKE'S ST-9X 9MM HEAVY BUFFER Lasered spider St-9x 9mm Heavy Buffer Material: 303 Stainless Steel Finish: Raw Weight: 7.7oz$49.95 -
Out of stock
TIMBER CREEK AR MAGAZINE RELEASE BUTTON - OLIVE DRAB GREEN
$7.99AR MAGAZINE RELEASE BUTTON - OD GREEN Manufactured by Timber Creek Outdoors Machined from billet aluminum Made in the USA Olive Drab Green Cerakote Finish$7.99 -
Out of stock
Adaptive Tactical EX Performance Stock - Black
$59.99Adaptive Tactical EX Performance Stock - Black Ideal upgrade for your AR15 or AR10 M4-style stock with adjustable length-of-pull Compatible with Mil-Spec sized extension tubes Sleek design$59.99 -
Out of stockOn Sale
Aero Precision M5 Lower Parts Kit
Sale: $92.99MSRP: $99.99Aero Precision M5 Lower Parts Kit Magpul MOE Grip in Black M5 (.308) Takedown Pin M5 (.308) Pivot Pin Takedown/Pivot Detent Takedown/Pivot Spring M5 (.308) Bolt Catch Bolt Catch Buffer Bolt Catch Roll Pin Bolt Catch Spring Extended Magazine...Sale: $92.99MSRP: $99.99 -
Armaspec AR-10 Soud Mitigation Buffer Gen 3 - Black
$59.99Armaspec AR-10 Soud Mitigation Buffer Gen 3 - Black Single-stage captured drop-in replacement for your standard buffer and spring Reduce felt recoil Keep the buffer spring from rubbing against the inner wall of the buffer tube providing smooth and...$59.99 -
BAD Mag Release Kit Mod 1 - Black
$19.00Battle Arms Development, Inc Magazine Release Kit Mod 1 Magazine Catch Spring Button Black Finish$19.00 -
Bravo Company Trigger Guard Mod 0 - FDE
$8.00Bravo Company Trigger Guard Mod 0 - FDE Ergonomically correct shape and contour No sharp edges, Compatible with "duck-billed" grips Made of impact resistant polymer$8.00 -
On Sale
Ghost Grip - Tactical Grape
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
Grid Defense AR-15 80% Lower Receiver With Fire/Safe Engravings 10 Pack - Black
Sale: $474.99MSRP: $1,400.00Grid Defense AR-15 80% Lower Receiver With Fire/Safe Engravings 10 Pack - Black Includes 10 80% Lower Receivers Machined from 7075-T6 Aluminum Forging 8625 Type III Hardcoat Anodize – Black Flared and broached magazine well Rear upper lug...Sale: $474.99MSRP: $1,400.00 -
Out of stockOn Sale
Grid Defense Billet AR-15 80% Lower Receiver With Optional Fire/Safe and Magwell Engravings
$74.99 - $89.99Grid 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...$74.99 - $89.99 -
HAMMER SPRING - AR15
$2.99HAMMER SPRING - AR15 Compatible with AR15/M4 Lower Receivers American Made$2.99