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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Magpul ACS Carbine Stock - Black
$89.95Magpul ACS Carbine Stock Compatible with Milspec Carbine Buffer Tube Dual Water Resistant Battery Storage Tubes Integral Storage Compartment Anti Snag Release Latch Friction Lock System to Minimize Stock Movement 0.30" Thick Butt Pad Made in the...$89.95 -
Odin Works ZULU Adjustable Stock Kit - Black
$149.00Odin Works ZULU Adjustable Stock Kit - Black Made from 6061 aluminum and Limbsaver recoil pad Secondary Buffer System Reduces Recoil Weight: 1.23 lbs Kit includes: -ZULU Adjustable Stock -Padded Intermediate Buffer Tube -Ambi Sling/QD...$149.00 -
Odin Works ZULU Stock Kit - Red
$169.00Odin Works ZULU Stock Kit - Red Made from 6061 aluminum and Limbsaver recoil pad Secondary Buffer System Reduces Recoil Weight: 1.23 lbs Kit includes: -ZULU Adjustable Stock -Padded Intermediate Buffer Tube -Ambi Sling/QD Plate Length of pull:...$169.00 -
PHASE5 WINTER TRIGGER GUARD - BLACK
$25.00BLACK PHASE 5 WINTER TRIGGER GUARD Newly Revised Useful Feature When Wearing Gloves Guard Shape Adds Visual Appeal Includes Allen Wrench, Roll Pin, Anti-Rattle Screw$25.00 -
Out of stockOn Sale
SB Tactical SBA5 Adjustable Pistol Brace With Grid Defense Buffer Tube Kit - FDE
Sale: $119.95MSRP: $169.95SBA5 with Grid Defense Buffer Kit - FDE SB Tactical SBA5 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
SKELETONIZED ELITE TRIGGER GUARD - OLIVE DRAB
$25.99Premium Skeletonized Elite Trigger Guard - Olive Drab This Skeletonized trigger guard is the premium option from the Vital trigger guard that comes standard with all completed lowers. With it's slim design, it offers coverage where it is needed...$25.99 -
STRIKE INDUSTRIES AMBI MAGAZINE RELEASE - TITANIUM
$43.95Strike Industries AMBI Magazine Release Made in USA Low Profile and Ergonomically Designed Includes Enhanced Magazine Release Button and Spring for Complete Drop-in Upgrade Ambidextrous for The Left and Right Handed Shooters Manufactured by Strike...$43.95 -
On Sale
Strike Industries AR10 Enhanced Bolt Catch - Black
Sale: $14.35MSRP: $15.95Strike Industries AR10 Enhanced Bolt Catch - Black MilSpec bolt catch Wide surface area bolt catch latch for enhanced operation Solid steel construction Sleek SI Design Compatible with AR-10 DPMS/LR-308 & SR-25 pattern lower...Sale: $14.35MSRP: $15.95 -
Out of stock
STRIKE INDUSTRIES FANG BILLET TRIGGER GUARD - FDE
$21.95STRIKE INDUSTRIES FANG BILLET TRIGGER GUARD - FDE 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...$21.95 -
Armaspec Stealth Spring C-H-H2 Kit
$109.99Armaspec Stealth Spring C-H-H2 Kit Stealth Recoil Spring (SRS) for AR-15 Carbine Length Keeps the Spring from Rubbing Against Inner Wall of the Buffer Tube Buffer Mass is Designed to Stay Under Constant Tension Against the Bolt Carrier Made in U.S...$109.99 -
ATI Outdoors Carbine Length Buffer Kit
$63.99ATI Outdoors Carbine Length Buffer Kit Fits most AR15 and AR Variants AR-15 Military-Spec Buffer Tube Virtually indestructible$63.99 -
Battle Arms Development EMMR Large Enhanced Modular Magazine Release - Black
$23.95Battle Arms Development EMMR Large Enhanced Modular Magazine Release - Black BAD-EMMR-L (Enhanced Modular Magazine Release - Large Finger Pad) for the AR15/AR10. Precision CNC Machined for billet 7075-T6 Aluminum, the BAD-EMMR features,...$23.95 -
Battle Arms Development Enhanced Magazine Catch - Black
$9.00Battle Arms Development Enhanced Magazine Catch - Black SKU: BAD-EMC-IC Type: Magazine Release Model: Enhanced Manufacturer: Battle Arms Development Manufacturer Part...$9.00 -
Bravo Company AR-15 PNT Trigger Assembly - Nickel
$70.00Bravo Company AR-15 PNT Trigger Assembly - Nickel PNT (Polished Nickel Teflon) parts feature micro polished contact surfaces low-friction Clean break and zero grittiness$70.00 -
Bravo Company Gunfighter's Grip Mod3 - FDE
$20.00Bravo Company BCMGUNFIGHTER Grip Mod3 - FDE 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
F.A.B. Defense GCCP AR-15 Buttstock - Black
$88.00F.A.B. Defense GCCP AR-15 Buttstock - Black Collapsible Rubber Buttpad Cheek Riser Small Compact Design Fits Mil-Spec and Commercial Tubes$88.00 -
Out of stock
Ghost Grip - Pink Champagne
$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 the...$19.99 -
Out of stockOn Sale
Grid Defense AR-15 80% Lower Receiver Without Fire/Safe Engravings 3 Pack - Raw
Sale: $145.00MSRP: $390.00Grid Defense AR-15 80% Lower Receiver 3 Pack - Raw Includes 3 Raw No Fire/Safe 80% Lower Receivers Machined from 7075 Forged Aluminum Made in house in the USA Flared and Broached Magwell Raw Aluminum Finish Does not have Fire/Safe Makings Can be...Sale: $145.00MSRP: $390.00 -
Grid Defense Pistol Stabilizing Fin - Pink Champagne
$49.99Grid Defense Pistol Stabilizing Fin - Pink Champagne -Constructed from Reinforced Polymer -Increases Weapon Control and Stability -Weighs 5.7oz -Fits Pistol Buffer Tube up to 1.25" (Not Included) -Finished in Pink Champagne Cerakote$49.99 -
LUTH-AR MBA-2 Skullaton Fixed Stock
$49.95LUTH-AR MBA-2 Skullaton Fixed Stock Comes with A2 Buttstock screw to connect to A2 standard buffer tube Fits AR-15 & AR-10 Rifle Length A2 Buffer Tube Luth-AR's MBA-2 Fixed Rifle Stock is designed to mount to an AR-15 or AR-10 Rifle Length A2...$49.95