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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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 -
Out of stock
Magpul MOE AR Grip - Pink
$19.95Magpul MOE Grip - Pink AR15/M4 Pistol Grip Flat Dark Earth Reinforced Polymer Construction Beavertail Backstrap Anti Slip Texture 25 Degree Angle Grip Weighs 2.8oz$19.95 -
Magpul Moe Plus Grip With Moe Stock - Black
$68.95Magpul MOE Plus AR Grip - Black AR15/M4 Pistol Grip Beavertail Backstrap Anti Slip Texture Reinforced Polymer Construction 25 Degree Angle Grip Weighs 3.4oz Made in the USA Magpul MOE Carbine Stock - Black Sloping cheek weld combines a slim profile...$68.95 -
Out of stock
Mil-Spec Lower Parts Kit Nickel Boron
$79.00Mil-Spec Lower Parts Kit Nickel Boron Includes: Nickel Boron Trigger Group A2 Grip Buffer Retainer Pin Buffer Retainer Spring Trigger Guard Safety Selector Bolt Catch Spring Detent Spring Bolt...$79.00 -
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 -
Out of stock
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 -
Out of stockOn Sale
SB Tactical SBA3 Adjustable Pistol Brace With Grid Defense Buffer Tube Kit - Sniper Gray
Sale: $119.95MSRP: $169.95SBA3 With Grid Defense Buffer Kit - Sniper Gray SB Tactical SBA3 Pistol Stabilizing Brace - Sniper Gray 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 -
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 -
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 -
Armaspec AR-15 Stainless Steel Takedown/Pivot Pins
$15.99Armaspec AR-15 Stainless Steel Takedown/Pivot Pins Includes Takedown and Pivot pins that work with an AR15, M16 or M4 Ultra-Lightweight Built-in Dimples for easy pushing in Bullet tip and EZ-set hole for detent installation Made with...$15.99 -
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 -
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 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