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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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
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 -
F.A.B. Defense GL-Core S AR-15 Buttstock - Black
$55.99F.A.B. Defense GL-Core S AR-15 Buttstock - Black Collapsible Rubber Buttpad Small and Compact Design Fits Mil-Spec and Commercial Buffer Tubes$55.99 -
Maxim Defense CCS Gen 6 Stock - Black
$295.00Maxim Defense CCS Gen 6 Stock - Black Uses Standard Buffer 3 Postition Fits AR-15$295.00 -
Rise Armament RAVE-PCC Trigger
$159.99Rise Armament RAVE-PCC Trigger Black Nitride Finish Includes Anti-Walk Pins Durable Construction 3.5 lb trigger pull Designed for use in 9MM AR configurations$159.99 -
Seekins Precision Builder's Kit Lower Parts Kit
$149.00Seekins Precision Builder's Kit Lower Parts Kit Seekins Precision Parts No Trigger Included Ar-15 LPK Trigger Guard Mag Release Bolt Catch Ambi Safety Take Down Pins Pins Detents and Springs$149.00 -
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 -
ATI Outdoors AR-15 X1 Pistol Grip - Black
$29.99ATI Outdoors AR-15 X1 Pistol Grip - Black Fits AR-15/AR-10 Fits the Ruger 22 Charger Pistol with AR-15 Style Grip DuPont(R) Extreme Temperature Glass Reinforced Polymer Scratch & weatherproof$29.99 -
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 -
Mission First Tactical Engage AR Pistol Grip - Black
$24.99Mission First Tactical AR Pistol Grip - Black Black finish Tab covers the receiver gaps Secure water resistant storage compartment Plug retention$24.99 -
On Sale
Strike Industries FSA Stock - Black
Sale: $185.95MSRP: $197.95Strike Industries FSA Stock - Black Patented first-in-market Picatinny dual folding adapter with intuitive unfolding system Folds left or right anytime without flipping or reconfiguring hinge Positive lock in the folded position, included rubber...Sale: $185.95MSRP: $197.95 -
Out of stock
AR Enhanced Ambidextrous Safety Selector - Blue
$23.99AR Enhanced Ambidextrous Safety Selector - Blue 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 -
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 -
ATI Outdoors TactLite Stock - Fits Mossberg/Winchester/Remington 12 Gauge
$73.99ATI Outdoors TactLite Stock - Fits Mossberg/Winchester/Remington 12 Gauge Fits Mossberg/Remington/Winchester 12ga & 20ga (proud fit) Is a direct replacement and evolution of the MRW4100 Adjustable Pistol Grip Shotgun Stock$73.99 -
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 -
Out of stock
CAA COLLAPSIBLE BUTT STOCK - BLACK
$59.35CAA COLLAPSIBLE BUTT STOCK - BLACK Storage compartment for CR123 batteries. Side Picatinny rail – allows addition of Adjustable cheek-rest (#ACP), mag’ pouch (#MPS) or shell holder (#SSM). Rubber non-slip buttpad with tapered...$59.35 -
Out of stock
Ergo MSR Compact AR-15 Pistol Grip - Black
$17.99Ergo MSR Compact AR-15 Pistol Grip - Black MSR Upgraded Pistol Grip Aggressive Texturing Integral rear upper extension supports the web of the shooters hand Mounting hardware included$17.99 -
F-1 Firearms SSK Safety Selector Kit - Black
$64.99F-1 Firearms SSK Safety Selector Kit - Black 90 Degree Throw Anodized Finish Skeletonized Construction 1 Long and 1 Short Paddle Includes Tube, Detent, Spring and 2 Screws$64.99 -
Magpul MOE-K2 AK Grip - Black
$20.95Magpul MOE-K2 AK Grip - Black Drop-in upgrade for AK47/AK74 pistol grips More vertical grip angle than typical AK designs Aggressive TSP texture for positive weapon control$20.95 -
Odin Works Bolt Catch - Black
$20.00Odin Works Bolt Catch - Black Fits AR-15 platform rifles Black Anodized Finish$20.00