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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TIMBER CREEK AMBIDEXTROUS SAFETY SELECTOR - BLUE
$39.99Timber Creek Ambidextrous Safety Selector Aircraft grade aluminum levers Made in the USA Choose from a variety of colors Manufactured by Timber Creek Outdoors$39.99 -
TIMBER CREEK AMBIDEXTROUS SAFETY SELECTOR - PURPLE
$39.99TIMBER CREEK AMBIDEXTROUS SAFETY SELECTOR - PURPLE Choose from variety of colors Made in the USA Manufactured by Timber Creek Outdoors Billet aluminum material$39.99 -
TIMBER CREEK AMBIDEXTROUS SAFETY SELECTOR - TUNGSTEN GRAY
$39.99AMBIDEXTROUS SAFETY SELECTOR - TUNGSTEN GRAY Lightweight material Made in the USA Multiple configurations for shooters Manufactured by Timber Creek Outdoors Inc.+ Tungsten Gray Cerakote Finish$39.99 -
TIMBER CREEK AR OVERSIZED TRIGGER GUARD - ORANGE
$23.99AR OVERSIZED TRIGGER GUARD - ORANGE Anodized Orange finish Made in the USA Provides more space Aircraft grade billet aluminum$23.99 -
TIMBER CREEK AR OVERSIZED TRIGGER GUARD - PURPLE
$23.99AR OVERSIZED TRIGGER GUARD - PURPLE Drop in Trigger Guard Larger space for gloved or large firing hand Weight 0.4oz. Manufactured by Timber Creek Outdoors, Inc. Purple Anodized Finish$23.99 -
TIMBER CREEK AR OVERSIZED TRIGGER GUARD - RED
$23.99Timber Creek Oversized Trigger Guard - AR OVERSIZED TRIGGER GUARD - RED Replacement Trigger Guard AR Trigger Guard Red Anodized Lightweight Manufactured by Timber Creek Outdoors, Inc.$23.99 -
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 -
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 -
Geissele 2 Stage Trigger - G2S
$165.00Geissele 2 Stage (G2S) Trigger Type: 2 Stage 1st Stage Weight: 2.5lbs. 2nd Stage Weight: 2.0lbs. Total Pull Weight: 4.5lbs. Adjustable: No Recommended Use: Law Enforcement, Home Defense, Hunting Pin Size: Mil-Spec$165.00 -
Ghost Grip - Burnt Bronze
$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...$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 -
MIL-SPEC PISTOL BUFFER TUBE - BLUE TITANIUM
$25.00MIL-SPEC PISTOL BUFFER TUBE - BLUE TITANIUM Made From: Forged 7075 aluminum Blue Titanium Cerakote Finish **Buffer, Castle Nut, End Plate Not Included**$25.00 -
Phase5 Hex-2 AR15 Pistol Buffer Tube
$59.95Phase5 Hex-2 AR15 Pistol Buffer Tube Specifically Designed to Fit Sig SB15 Stabilizing Brace Includes Castle Nut, End Plate and Foam Pad Black Finish Compatible with Milspec AR15/M4 Receivers Made in the USA$59.95 -
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 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 -
STRIKE INDUSTRIES FANG BILLET TRIGGER GUARD - BLACK
Sale: $17.95MSRP: $19.95STRIKE INDUSTRIES FANG BILLET TRIGGER GUARD - BLACK Contents:- 1x Aluminum Trigger Guard- 4x M3 Hex Screw- 1x Warning card Features:- Aircraft grade aluminum construction- Magazine reload assist- Cleaner, faster reloads- Lightweight (.4 oz with...Sale: $17.95MSRP: $19.95 -
STRIKE INDUSTRIES MAGAZINE CATCH - FDE
$18.95STRIKE INDUSTRIES MAGAZINE CATCH - FDE Enhanced Magazine Catch: Steel 6061-T6 Aluminum Release Button Solid Billet Aluminum Construction Unique Anodized Colors FDE Finish$18.95 -
VITAL TRIGGER GUARD - ROBINS EGG
$15.99VITAL TRIGGER GUARD - ROBINS EGG With it's slim design, it offers coverage where it is needed serving its purpose: but yet not getting in the way when inquiring your target. Material: Plastic AR Trigger Gaurd Weight: 1.54oz Includes: Pin...$15.99 -
ATI Outdoors AR-15 Buffer Spring
$6.99ATI Outdoors AR-15 Buffer Spring Manufactured in the USA Virtually Indestructible Fits Most AR-15 and AR Variants$6.99 -
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