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.
-
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 -
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 stock
Magpul Enhanced AR Magazine Release - Black
$19.95Magpul Enhanced AR Magazine Release - Black Machined from milspec anodized aluminum Provides larger contact surface for positive activation Compatible with most 5.56 and 7.62 pattern receivers$19.95 -
Magpul MOE SL Carbine Stock - Black
$59.95Magpul MOE SL Carbine Stock - Black Made in U.S.A. FEATURES Mounts on mil-spec sized carbine receiver extension tube (not included) from manufacturers such as Colt, LMT, Ruger, S&W, SIG, and others (please see the note below) Sloping...$59.95 -
Strike Industries MOD1 Stock - Black
$54.95Strike Industries MOD1 Stock - Black Slide on replacement for factory collapsible butt stock Enhanced cheek weld Designed for use with and without rubber buttpad Fits AR-15$54.95 -
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
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 -
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 -
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 -
Out of stock
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 -
Out of stockOn Sale
Rise Armament Lower Parts Kit - No Fire Control Group
Sale: $40.49MSRP: $44.99Rise Armament Lower Parts Kit - No Fire Control Group Precise Manufacturing Long Term Reliability Durable ConstructionSale: $40.49MSRP: $44.99 -
Spike's Enhanced Lower Parts Kit
$181.00Spike's Enhanced Lower Parts Kit 556 - Black Better than Mil-Spec quality Five Upgrades Over Standard Parts Kit Battle Trigger Group (Nickel Boron Coated)Billet Tool-less Trigger GuardBlack Ergo GripBlack KNS Anti Rotation Gen 2 Mod 2Ambi Safety Also...$181.00 -
Out of stock
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 -
Strike Industries AR Flip Switch - Red
$43.95Strike Industries AR Flip Switch - Red 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
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 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