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
TIMBER CREEK AR TAKEDOWN PIN SET - ORANGE
$19.99AR TAKEDOWN PIN SET - ORANGE Made in USA Anodized finish Compatible with AR15/M4 lower receivers Machined from billet aluminum These CNC machined pins are drop in replacements for Mil-Spec lowers and allow easier disassembly of your...$19.99 -
Out of stock
TIMBER CREEK ENFORCER AR PISTOL GRIP - RED
$99.00TIMBER CREEK ENFORCER AR PISTOL GRIP - RED Lightweight Made in the USA Red anodized with clear cerakote Mounts to any standard milspec receiver$99.00 -
$2.99 -
Out of stock
Aero Precision AR-15 Lower Parts Kit without Fire Control Group
$34.99Aero Precision AR-15 Lower Parts Kit without Fire Control Group Takedown/pivot Spring Takedown/pivot detent Takedown pin Pivot pin Bolt Catch Bolt Catch Spring Bolt Catch buffer Bolt catch roll pin Safety Selector Safety Selector...$34.99 -
Out of stock
Armaspec Superlight AR-15 Lower Parts Kit - FDE
$84.99Armaspec Superlight AR-15 Lower Parts Kit - FDE 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 -
BAD-EPS Enhanced Takedown and Pivot Pin Set AR-15
$29.95BATTLE ARMS DEVELOPMENT ENHANCED PIVOT & TAKEDOWN PIN SET AR15 / M16 / M4 Compatible - Fits all AR15/M16/M4 lower receivers with mil-spec .250in diameter front pivot and rear take-down pin holes Patent Pending Pivot Pin & Take-down...$29.95 -
Bravo Company Gunfighter's Grip Mod3 - Black
$20.00Bravo Company Gunfighter's Grip MOD3 - Black Fits AR rifles Reduced angle for improved ergonomics Hinged trap door offering storage inside the grip Up to 1/4" wider than Mod 0 and Mod 1$20.00 -
Out of stock
Elftmann Ambi Speed Safety - Black
$39.95Elftmann Ambi Speed Safety 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 -
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 approximately 50% lighter than that of a standard AR-15...$279.00 -
On Sale
Ghost Grip - Bazooka 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 -
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 upper receivers Made in the USA Optional Fire/Safe...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 lug pocket cut out Fits all mil-spec 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 CARBINE STOCK - OD GREEN
$44.95Magpul MOE Carbine Stock - OD Green 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...$44.95 -
Out of stock
ODIN Works AR-10 Adjustable Buffer
$49.00ODIN Works AR-10 Adjustable Buffer FEATURES: Comes with 3 different weights Allow multiple possibilities of weight combinations Designed specifically for the .308 AR carbines Set screws design for easy...$49.00 -
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