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
Sylvan Arms Folding Hinge Stock Adapter - Gen 3
$179.99The Sylvan Arms Folding Hinge Stock Adapter allows you to fold your stock and significantly reduce the length of your rifle for easy stow and travel.Specifically designed for gas piston and direct impingement systems 5.56 to .308 systems, as well as .223...$179.99 -
Skeletonized Elite Trigger Guard
$24.99Premium Skeletonized Elite Trigger Guard 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 serving its...$24.99 -
$9.99 -
Grid Defense Mil-Spec Carbine Buffer Tube Assembly - Blue Titanium
$40.00Grid Defense Mil-Spec Carbine Buffer Tube Kit - Blue Titanium Made in the USA Compatible with M4 Type Butt Stocks 6 Position Carbine Buffer Tube Machined from 7075-T6 Aluminum End Plate Castle Nut Carbine Buffer Spring Carbine Buffer Weight: 9...$40.00 -
Grid Defense Mil-Spec Carbine Buffer Tube Assembly - FDE
$40.00Grid Defense Mil-Spec Carbine Buffer Tube Kit - FDE Made in the USA Compatible with M4 Type Butt Stocks 6 Position Carbine Buffer Tube Machined from 7075-T6 Aluminum End Plate Castle Nut Carbine Buffer Spring Carbine Buffer Weight: 9...$40.00 -
BOLT CATCH PLUNGER - AR15
$1.99BOLT CATCH PLUNGER Compatible with AR15/M4 Lower Receivers American Made$1.99 -
Out of stockOn Sale
Grid Defense AR-15 80% Lower Receiver Without Fire/Safe Engravings - Raw
Sale: $39.99MSRP: $129.00Grid Defense AR-15 80% Lower Receiver - Raw 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 used for Multiple Calibers .223/5.56/300BLK/9mm/7...Sale: $39.99MSRP: $129.00 -
Grid Defense Mil-Spec Carbine Buffer Tube Assembly - Burnt Bronze
$40.00Grid Defense Mil-Spec Carbine Buffer Tube Kit - Burnt Bronze Made in the USA Compatible with M4 Type Butt Stocks 6 Position Carbine Buffer Tube Machined from 7075-T6 Aluminum End Plate Castle Nut Carbine Buffer Spring Carbine Buffer Weight: 9...$40.00 -
Out of stockOn Sale
Tactical Dynamics Skeleton Stock - Blue Titanium
Sale: $56.00MSRP: $109.00Tactical Dynamics Skeleton Stock Finished in Blue Titanium Cerakote Made in the USA Compatible with Milspec Carbine Buffer Tube Machined from 6061-T6 Aluminum Specs 6 3/4" Long 5 1/4" Contact Area 1 1/4" Wide 9.65ozSale: $56.00MSRP: $109.00 -
VITAL TRIGGER GUARD - ZOMBIE GREEN
$15.99Vital Trigger Guard - Zombie Green 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 Weight: 1.54oz Includes: Pin & Allen Set...$15.99 -
$1.99 -
Out of stock
STRIKE INDUSTRIES ULTRA LIGHT PIVOT / TAKEDOWN PINS - FDE
$16.95Strike Industries Ultra Light Pivot/Takedown pins - FDE Extended Grasping Service Extended Pivot Pin / 1.31" Length Extended Takedown Pin / 1.08" length Ultra light and Ultra Strong Construction For AR15 Lowers FDE Finish$16.95 -
Adaptive Tactical Lightweight Tactical Grip - Black
$17.99Adaptive Tactical Lightweight Tactical Grip - Black AR-15/M-16/M4 Pistol Grip Constructed from High Grade Reinforced Polymer One Piece Construction Non-Conductive Ergonomic Aggressive Design Lightweight and...$17.99 -
Magpul MOE AR15/M4 Pistol Grip - OD Green
$20.95Magpul MOE AR15/M4 Pistol Grip - OD Green Made in U.S.A. Features Replacement for AR15/M4 pistol-grip* One-piece reinforced polymer construction Beavertail backstrap for enhanced ergonomics Positive anti-slip texture Includes a basic grip...$20.95 -
Tactical Dynamics Skeleton Stock - Burnt Bronze
$109.00Tactical Dynamics Skeletonized Stock Finished in Burnt Bronze Cerakote Made in the USA Fits: Mil Spec Buffer Tube Made From: Aluminum 6061-T6 Specs 6 3/4" Long 5 1/4" Contact Area 1 1/4" Wide 9.65oz$109.00 -
Out of stock
Magpul MOE Trigger Guard - OD Green
$8.95Magpul MOE Trigger Guard - OD Green Constructed from Advanced Polymer Compatible with the AR15/M4 Platform All Mounting Hardware Included Made in the USA$8.95 -
MIL-SPEC CARBINE BUFFER TUBE - BLUE TITANIUM
$30.00MIL-SPEC CARBINE BUFFER TUBE - BLUE TITANIUM Made in the USA Compatible with M4 Type Butt Stocks 6 Position Machined from 7075-T6 Aluminum Weight: 3.6oz Blue Titanium Cerakote Finish$30.00 -
CMC AR-15 Match Trigger Flat Bow - 3.5LB
$189.99CMC AR-15 FLAT MATCH TRIGGER FEATURES Single Stage AR15 Match Trigger Multiple trigger pull weights Ultra-crisp trigger with no feel of creep prior to hammer release Trigger has glass-smooth break with no feel of grittiness Minimal lock time is...$189.99 -
MIL-SPEC CARBINE BUFFER TUBE - TEQUILA SUNRISE
$30.00MIL-SPEC CARBINE BUFFER TUBE - TEQUILA SUNRISE Made in the USA Compatible with M4 Type Butt Stocks 6 Position Machined from 7075-T6 Aluminum Weight: 3.6oz Tequila Sunrise Cerakote Finish$30.00 -
On Sale
SB Tactical SBA3 Adjustable Pistol Brace With Grid Defense Buffer Tube Kit - FDE
Sale: $119.95MSRP: $169.95SBA3 With Grid Defense Buffer Kit - FDE SB Tactical SBA3 Pistol Stabilizing Brace - Flat Dark Earth Complete Grid Defense Buffer Tube Assembly Kit Carbine buffer (3 oz) Carbine buffer spring Carbine stock end plate Carbine stock lock...Sale: $119.95MSRP: $169.95