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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Radian Weapons Talon Ambidextrous Safety Selector - Flat Dark Earth
$64.95Radian Weapons Talon Ambidextrous Safety Selector - Flat Dark Earth Short & Long Lever Billet Aircraft Grade Aluminum Center Shaft Machined from Hardened Steel AR15/AR10 Compatible$64.95 -
On 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 -
Out of stock
TACTICAL DYNAMICS SKELETON GRIP - PERIWINKLE
$79.00Tactical Dynamics Skeleton Grip - Periwinkle Machined from 7075-T6 Aluminum Durable and Lightweight Compatible with AR15/AR10 Platforms Unique Design Made in the USA Periwinkle Cerakote Finish$79.00 -
TIMBER CREEK ENFORCER AR PISTOL GRIP - FLAT DARK EARTH
$99.99ENFORCER AR PISTOL GRIP - FLAT DARK EARTH Cerakote FDE Pistol Grip Weighs 4oz. Manufactured by Timber Creek Outdoors, Inc.$99.99 -
Out of stock
$99.99 -
Wilson Combat Single Stage Trigger
$189.95Wilson Combat Single Stage Trigger 5-5.75 Lb pull Fits AR-15 style rifles$189.95 -
Out of stock
2A Armaments Builder Series Slotted Trigger Guard
$14.992A Armaments Builder Series Slotted Trigger Guard Precise Manufacturing Long Term Reliability Durable Construction Black Anodized Finish For AR-15 Rifles Aluminum Construction$14.99 -
Out of stock
Adaptive Tactical EX Lite Stock - Black
$34.99Adaptive Tactical EX Lite Stock - Black Only compatible with Mil-Spec sized extension tubes Covered take down pin makes installation and removal easier and eliminates discomfort M4-style stock with adjustable length-of-pull Easy to reach...$34.99 -
Out of stock
AR Enhanced Ambidextrous Safety Selector - Black
$20.99AR Enhanced Ambidextrous Safety Selector - Black For Left or Right-Handed Shooters Replaces Existing Safety Lever Easy-To-Operate Safety Lever on Both Sides of The Receiver Does Not Interfere with Grip Position or Thumb Placement Fits Semi-Auto ...$20.99 -
Out of stock
AR Enhanced Ambidextrous Safety Selector - Gold
$23.99AR Enhanced Ambidextrous Safety Selector - Gold For Left or Right-Handed Shooters Replaces Existing Safety Lever Easy-To-Operate Safety Lever on Both Sides of The Receiver Does Not Interfere with Grip Position or Thumb Placement Fits Semi-Auto ...$23.99 -
Out of stock
AR Enhanced Ambidextrous Safety Selector - Red
$23.99AR Enhanced Ambidextrous Safety Selector - Red For Left or Right-Handed Shooters Replaces Existing Safety Lever Easy-To-Operate Safety Lever on Both Sides of The Receiver Does Not Interfere with Grip Position or Thumb Placement Fits Semi-Auto ...$23.99 -
Out of stockOn Sale
AR-15 80% Lower With Fire/Safe Engravings | SBA4 | 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. Featuring an 80% lower receiver with Fire/Safe engravings, an...Sale: $189.99MSRP: $379.94 -
Battle Arms Development AR-15 Nickel Teflon Enhanced Trigger Assembly
$69.00Battle Arms Development AR-15 Nickel Teflon Enhanced Trigger 5.5-6 lbs Trigger Pull Weight Nickel Teflon Made in the USA Hammer Disconnect Trigger Spring, Hammer Spring and Disconnect Spring Included$69.00 -
Battle Arms Development BAD-ASS PRO Ambi Safety Selector
$45.00Battle Arms Development BAD-ASS PRO Ambi Safety Selector Specifications: SKU: BAD-ASS-PRO-1522 UPC: 810033780257 Manufacturer: Battle Arms Development, Inc. Center Material/Finish: Swiss CNC Machined Bar-Stock Steel Core, Hardened, Black...$45.00 -
Elftmann Tactical Adjustable Trigger with Curved Shoe - Black
$139.00Elftmann Tactical Adjustable Trigger with Curved Shoe - Black Fits any and all AR platforms Incremental Adjustment Knob Drop-Safe Adjustable from 2 3/4lbs to 4lbs without removing from lower Patented Double-Double torsion hammer spring Short pull...$139.00 -
Out of stock
ERGO 2 Sure Grip - FDE
$25.99ERGO 2 Sure Grip - FDE Design allows installation on both .223 and .308 AR-15/AR-10 type receivers. A2 sized inner cavity compatible with many accessories available on the market. Ergonomically correct finger grooves Integrated rear upper extension...$25.99 -
F.A.B. Defense GL-Core CP AR-15 Buttstock - Tan
$81.99F.A.B. Defense GL-Core CP AR-15 Buttstock - Tan Tan finish Interchangeable buffer tube adapters for a tight fit on Mil-Spec and Commercial buffer tubes Additional" adjustable Cheek-Rest$81.99 -
F.A.B. Defense Gradus AR Pistol Grip - FDE
$29.00F.A.B. Defense Gradus AR Pistol Grip - FDE Ergonomic AR Grip$29.00 -
Out of stock
F1 Firearms GRP Style 1 Grip - Black
$79.99F1 Firearms GRP Style 1 Grip - Black Skeletonized and Textured Construction Type-1 No Finger Grooves Anodized Finish Fits AR Platform Rifles$79.99 -
Out of stock
FAILZERO DROP IN TRIGGER GROUP - CURVED
$179.99FAILZERO TRIGGER GROUP KEY FEATURES: Single-stage trigger system 3.5-lb. pull weight Clean break with a short reset Comfortable, rounded trigger Unit weight: 2.6 oz. CNC machined from high-grade, heat-treated tool steel and...$179.99