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.
-
Sylvan Arms Folding Stock Adapter Gen 4 - Left Hand
$199.99Sylvan Arms Folding Stock Adapter Gen 4 - Left Hand Compatible with most AR15 Standard 1-3/16" x 16 thread Lightweight and Corrosion-Resistant Left folding$199.99 -
TIMBER CREEK AR MAGAZINE RELEASE BUTTON - ORANGE
$7.99AR MAGAZINE RELEASE BUTTON - ORANGE Anodized orange finish Compatible with all Milspec lowers Manufactured in the USA Lightweight billet aluminum Â$7.99 -
Out of stock
TIMBER CREEK ENFORCER AR PISTOL GRIP - ORANGE
$99.99TIMBER CREEK ENFORCER AR PISTOL GRIP - ORANGE Made in USA Orange Anodized finish CNC machined from aircraft grade billet aluminum Manufactured by Timber Creek Outdoors Inc.$99.99 -
TIMBER CREEK RECEIVER EXTENSION PLATE - ORANGE
$69.99TIMBER CREEK RECEIVER EXTENSION PLATE - ORANGE Made in the USA Machined from aircraft billet aluminum Drop in replacement stock Anodized orange finish$69.99 -
TIMBER CREEK RECEIVER EXTENSION PLATE - TUNGSTEN
$69.99TIMBER CREEK RECEIVER EXTENSION PLATE - TUNGSTEN Made in the USA Aircraft grade billet aluminum Fits all carbine length milspec buffer tube Manufactured by Timber Creek Outdoors Inc.$69.99 -
Out of stock
2A Armament AR-10 Takedown Pin Set - Titanium
$39.982A Armament AR-10 Takedown Pin Set - Titanium .278 Pin Size Through Drilled for Weight Reduction 6AL-4V Titanium$39.98 -
ALG DEFENSE COMBAT TRIGGER - NICKEL BORON
$79.00ALG DEFENSE COMBAT TRIGGER Single Stage Stock Trigger Reliability Wear Resistant Nickel Boron Plated 6 Pound Pull$79.00 -
Out of stock
AR Ambi Dual Lever Safety Selector - Black
$14.99AR Ambi Dual Lever Safety Selector - Black Mil-Spec High Carbon Steel construction Anti-reflective matte Black finish Ambidextrous Fits: AR-15$14.99 -
Out of stockOn Sale
AR-15 80% Lower With Fire/Safe Engravings | SBA3 | Mil-Spec LPK | Carbine Buffer Tube Kit
Sale: $189.99MSRP: $379.94AR-15 80% Lower With Fire/Safe Engravings | SBA3 Pistol Brace | Mil-Spec LPK | Carbine Buffer Tube Kit This AR-15 80% Lower Build Kit provides a solid foundation for your next custom rifle...Sale: $189.99MSRP: $379.94 -
Out of stock
AR-15 Extended Bolt Catch Lever
$19.99AR-15 Extended Bolt Catch Lever CNC Machined Aluminum Compatible for Left/Right Hand Attatches to AR-15 Bolt Catch Finished in Hard Coat Black Anodize$19.99 -
AR-15 Mil-Spec Buffer Tube Castle Nut
$5.99Secure your buffer tube and receiver end plate with complete confidence using the AR-15 Mil-Spec Castle Nut. Engineered to strict military specifications, this critical lower receiver component...$5.99 -
Armaspec XPDW 5 Position Adjustable Stock Gen 2 - Black
$219.99Armaspec XPDW 5 Position Adjustable Stock Gen 2 - Black Precise Manufacturing Long Term Reliability Durable Construction Fits Mil-Spec Buffer Tube$219.99 -
B5 Systems Trigger Guard - Black
$20.00B5 Systems Trigger Guard - Black Made of 6061 aluminum. Milspec Type III anodized finish. Weight: 3.00 oz.$20.00 -
BRAVO COMPANY GUNFIGHTER GRIP MOD 0 - BLACK
$30.00BRAVO COMPANY BCMGUNFIGHTER GRIP MOD 0 - BLACK Fits AR rifles Reduced angle for improved ergonomics Hinged trap door offering storage inside the grip Test fit to ensure proper function$30.00 -
BRAVO COMPANY GUNFIGHTER GRIP MOD 0 - FDE
$30.00BRAVO COMPANY BCMGUNFIGHTER GRIP MOD 0 - FDE Fits AR rifles Reduced angle for improved ergonomics Hinged trap door offering storage inside the grip Test fit to ensure proper function$30.00 -
F.A.B. Defense MOJO AR-15 Magwell Grip - Black
$57.00F.A.B. Defense MOJO AR-15 Magwell Grip - Black Replaceable grip area (Comes standard with the Tactical grip and one Mask grip) Easy installation Durable and lightweight$57.00 -
Out of stock
Fortis Magazine Release Button AR15/AR10 - Blue
$7.95Fortis Magazine Release Button AR15/AR10 - BLUE Description: The Fortis Billet Mag Button is a superior alternative to the ones found in a mil-spec lower parts kit. Easily installs in seconds and...$7.95 -
Out of stock
Fortis Magazine Release Button AR15/AR10 - Red
$7.95Fortis Magazine Release Button AR15/AR10 - RED Description: The Fortis Billet Mag Button is a superior alternative to the ones found in a mil-spec lower parts kit. Easily installs in seconds and...$7.95 -
Magpul MOE-K Grip AR15/M4 - OD Green
$20.95Magpul MOE-K Grip - OD Green Replacement for AR15/M4 pistol-grip One-piece reinforced polymer construction More vertical grip angle than standard A2 grips Minimalist design$20.95 -
Magpul PSR GEN3 Precision Adjustable Stock - FDE
$259.95Magpul PSR GEN3 Precision Adjustable Stock - FDE Machined aluminum LOP and Cheek Piece adjustment knobs Steel adjustment shafts finished with Melonite Bottom M-LOK slots for sling or monopod$259.95