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.
-
Out of stock
Noveske STS 60 Degree Safety Selector
$37.95Noveske STS 60 Degree Safety Selector Nitride Finish 60 Degree Throw Machined Stainless Construction Tuned for Standard Actuation Force from Safe & Smooth Return from Fire$37.95 -
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 -
Sylvan Arms Folding Stock Adapter Gen 4 - Right Hand
$199.99Sylvan Arms Folding Stock Adapter Gen 4 - Right Hand Compatible with most AR15 Standard 1-3/16" x 16 thread Lightweight and Corrosion-Resistant Right folding$199.99 -
TIMBER CREEK AR MAGAZINE RELEASE BUTTON - BLACK
$7.99AR MAGAZINE RELEASE BUTTON - BLACK Billet 6061-T6 aluminum Compatible with all Milspec lowers Manufactured by Timber Creek Outdoors Made in the USA Black Anodized Finish$7.99 -
Out of stock
UTG Model 4 Combat Ops S1 Stock Kit - Black
$72.97UTG Model 4 Combat Ops S1 Stock Kit - Black lack finish 6-position adjustable/collapsible Includes: extension tube" buffer" buffer spring" tear-drop ring & castle nut AR-15/M4 style stock$72.97 -
Out of stock
ATI Outdoors AR-15 X2 Pistol Grip - Black
$29.99ATI Outdoors AR-15 X2 Pistol Grip - Black Fits most AR-15 and AR-10's V2 Sure Grip Texture Specifically Engineered Grip Dimensions Rear Tang & Curved Base Scratchproof & Weatherproof$29.99 -
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 -
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 -
B5 Systems Trigger Guard - FDE
$22.00B5 Systems Trigger Guard - FDE Made of 6061 aluminum. Milspec Type III anodized finish. Weight: 3.00 oz.$22.00 -
Battle Arms Development Enhanced Safety Selector
$16.00Battle Arms Development Enhanced Safety Selector AR15 Style Rifles and the ArmaLite,Inc.'s AR10® (Semi Auto). Single Side Safety Selector (0°-90° SEMI AUTO) Fit all Mil-Spec Dimensioned AR-15 Lower Receiver Black Phosphate...$16.00 -
Out of stock
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 -
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 stockOn Sale
Grid Defense AR-9 80% Lower Receiver Without Fire/Safe Engravings - Raw
Sale: $74.99MSRP: $179.00Grid Defense AR-9 80% Lower Receiver - Raw Raw Aluminum Finish Machined from 6061 billet aluminum Compatible with any Glock style small frame pistol calibers Compatible with Glock pattern or style magazines Magazine release button and ejector...Sale: $74.99MSRP: $179.00 -
Grid Defense Pistol Stabilizing Fin - Tungsten Gray
$49.99Grid Defense Pistol Stabilizing Fin - Tungsten Gray -Constructed from Reinforced Polymer -Increases Weapon Control and Stability -Weighs 5.7oz -Fits Pistol Buffer Tube up to 1.25" (Not Included) -Finished in Tungsten Gray Cerakote$49.99 -
Out of stock
MAGPUL MOE CARBINE STOCK MIL-SPEC PINK
$39.95MAGPUL MOE CARBINE STOCK MIL-SPEC PINK Sloping cheek weld combines a slim profile with user comfort Shielded release latch prevents snagging and accidental operation Premium chrome-silicon lock spring provides positive locking and long service life Side...$39.95 -
Out of stock
Magpul MOE-K Grip AR15/M4 - FDE
$20.95Magpul MOE-K Grip - Flat Dark Earth Compact and Thin Minimalist Design Constructed from Reinforced Polymer More Angled Vertical Grip than Standard A2 Grip Aggressive TSP Texture Weighs 2.4oz Made in the USA$20.95 -
Odin Works XMR2 Extended Mag Release - Gen 2
$22.00Odin Works XMR2 Extended Mag Release - Gen 2 Compatible with BAD Lever. Will not work with anti-walk pins without modification to the XMR2 .1 oz (including paddle, button, and screws) Large surface area for quick magazine reloads Easy to...$22.00 -
RADIAN WEAPONS AR15 AMBIDEXTROUS TALON SAFETY SELECTOR 4-LEVER KIT - NP3
$102.45AR15 AMBIDEXTROUS TALON SAFETY SELECTOR 4-LEVER KIT - NP3 The Talon™ ambidextrous safety selector is a modular design that can be installed as a standard 90° or as a 45° short throw by simply rotating the shaft 180° inside the lower...$102.45 -
SPIKE'S ST-T1 TUNGSTEN HEAVY BUFFER
$32.95ST-T1 TUNGSTEN Spikes Heavy Buffer Material: Solid Aluminum Billet Finish: Black Anodized Features: Crushed Tungsten, Mil-Spec...$32.95 -
Strike Industries Advanced Receiver Extension - Black
$52.95Strike Industries Advanced Receiver Extension - Black 7075-T6 Aluminum Supported buffer retaining tab$52.95