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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Battle Arms Development EMMR Large Enhanced Modular Magazine Release - Red
$23.95Battle Arms Development EMMR Large Enhanced Modular Magazine Release - Red 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 -
BATTLEARMS 3 Piece Enhanced Lower Parts Kit
$35.00BATTLEARMS 3 Piece Enhanced Lower Parts Kit Enhanced Bolt Catch (BAD-EBC-IC), which is a cost-friendly alternative, without sacrificing the quality for your AR build! The AR-15 Cast Enhanced Bolt Catch is 8620 heat treated cast steel with a manganese...$35.00 -
Out of stockOn Sale
Grid Defense AR-15 80% Lower Receiver Without Fire/Safe Engravings 5 Pack - Raw
Sale: $200.00MSRP: $600.00Grid Defense AR-15 80% Lower Receiver 5 Pack - Raw Includes 5 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: $200.00MSRP: $600.00 -
On Sale
Grid Defense Mil-Spec Lower Parts Kit - FDE
Sale: $59.99MSRP: $79.99Ghost Firearms Mil-Spec Lower Parts Kit - FDE FDE Cerakote Trigger Group FDE Cerakote A2 Grip Buffer Retainer Pin Buffer Retainer Spring Trigger Guard Safety Selector Bolt Catch Spring Detent Spring Bolt...Sale: $59.99MSRP: $79.99 -
Grid Defense Pistol Stabilizing Fin - OD Green
$49.99Grid Defense Pistol Stabilizing Fin - Blue Titanium -Constructed from Reinforced Polymer -Increases Weapon Control and Stability -Weighs 5.7oz -Fits Pistol Buffer Tube up to 1.25" (Not Included) -Finished in OD Green Cerakote$49.99 -
Out of stock
HEXMAG AR15 ADVANCED TACTICAL GRIP - FDE
$29.99HEXMAG AR15 ADVANCED TACTICAL GRIP - FDE Fits AR-15 and AR-10 platforms 17 for pistols/SBRs" 25 degree for standard angle or 33 degree for long range Made from fiber-reinforced polymer HexMag's AR-15 Advanced Tactical Pistol Grip features a...$29.99 -
Out of stock
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 -
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 -
Rise Armament Super Sporting Trigger with Anti-Walk Pins - Don't Tread On Me Edition
$139.00Rise Armament Super Sporting Trigger with Anti-Walk Pins - Don't Tread On Me Edition Clean break with a short reset Enhances accuracy by minimizing gun disturbance and allows faster initial and follow up shots when compared to a standard trigger...$139.00 -
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 -
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 -
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 -
B5 Systems AR-15 Pistol Grip - Black
$20.00B5 Systems AR-15 Pistol Grip - Black Aggressive texture for increased retention. Accepts Battery Grip Plug. Made of Milspec material. Available in all standard colors.$20.00 -
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