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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STRIKE INDUSTRIES MEGAFIN FEATURELESS AR GRIP
$43.95STRIKE INDUSTRIES MEGAFIN FEATURELESS AR GRIP Package includes:- 1x SI Megafin Featureless Grip- 1x Grip Screw- 1x Grip Screw Washer Features- Textured for sure grip- Conforms to DOJ criteria-...$43.95 -
Out of stock
TIMBER CREEK AMBIDEXTROUS SAFETY SELECTOR - BLUE
$39.99Timber Creek Ambidextrous Safety Selector Aircraft grade aluminum levers Made in the USA Choose from a variety of colors Manufactured by Timber Creek Outdoors$39.99 -
Out of stock
TIMBER CREEK AMBIDEXTROUS SAFETY SELECTOR - TUNGSTEN GRAY
$39.99AMBIDEXTROUS SAFETY SELECTOR - TUNGSTEN GRAY Lightweight material Made in the USA Multiple configurations for shooters Manufactured by Timber Creek Outdoors Inc.+ Tungsten Gray Cerakote...$39.99 -
Out of stock
TIMBER CREEK AR EXTENDED MAGAZINE RELEASE - PURPLE ANODIZED
$19.99AR EXTENDED MAGAZINE RELEASE - PURPLE Compatible with all variances of the AR platform Manufactured by Timber Creek Outdoors Aircraft grade billet aluminum Purple Anodized Finish$19.99 -
Out of stock
TIMBER CREEK AR EXTENDED MAGAZINE RELEASE - RED
$19.99AR EXTENDED MAGAZINE RELEASE - RED Made in the USA Red Anodized Finish Compatible with all mil-spec lowers Manufactured by Timber Creek Outdoors Inc.$19.99 -
Out of stock
TIMBER CREEK AR OVERSIZED TRIGGER GUARD - ORANGE
$23.99AR OVERSIZED TRIGGER GUARD - ORANGE Anodized Orange finish Made in the USA Provides more space Aircraft grade billet aluminum$23.99 -
Out of stock
TIMBER CREEK AR OVERSIZED TRIGGER GUARD - RED
$23.99Timber Creek Oversized Trigger Guard - AR OVERSIZED TRIGGER GUARD - RED Replacement Trigger Guard AR Trigger Guard Red Anodized Lightweight Manufactured by Timber Creek Outdoors, Inc.$23.99 -
Out of stock
TIMBER CREEK AR TAKEDOWN PIN SET - PURPLE
$19.99AR TAKEDOWN PIN SET - PURPLE Replacement pin set Made in the USA Anodized finish Machined from billet aluminum$19.99 -
Out of stock
Armaspec SMB Buffer Kit Gen 3 H2
$95.99Armaspec SMB Buffer Kit Gen 3 H2 SMB-H2 Buffer, 4.7oz Includes SMB Buffer, Buffer Tube, Endplate and Castle Nut Fits AR-15 Pattern Firearms$95.99 -
Battle Arms Development EMMR Large Enhanced Modular Magazine Release - Red
$23.95Battle Arms Development EMMR Large Enhanced Modular Magazine Release - Red BAD-EMMR-L (Enhanced Modular Magazine Release - Large Finger Pad) for the AR15/AR10. Precision CNC Machined for billet...$23.95 -
Out of stock
BRAVO COMPANY GUNFIGHTER SOPMOD 0 ADJUSTABLE STOCK - BLACK
$64.00BRAVO COMPANY BCMGUNFIGHTER MOD 0 STOCK - BLACK The strongest light-weight polymer stock available for your mil-spec receiver extension More pronounced cheekweld-SOPMOD type (widebody)$64.00 -
On Sale
Grid Defense Mil-Spec Lower Parts Kit - FDE
Sale: $59.99MSRP: $79.99Ghost Firearms Mil-Spec Lower Parts Kit - FDE FDE Cerakote Trigger Group FDE Cerakote A2 Grip Buffer Retainer Pin Buffer Retainer Spring TriSale: $59.99MSRP: $79.99 -
On Sale
Magpul ACS-L Carbine Stock Mil-Spec - Black
Sale: $76.95MSRP: $84.95Magpul Acs-l Stock Made in the USA 0.30" Rubber Butt Pad offers an Anti-Slip Surface Storage Compartment in Tail of Stock with Positive Latching Access Door on Right Hand Side Two Water...Sale: $76.95MSRP: $84.95 -
Magpul Aluminum Enhanced Trigger Guard
$19.95Magpul Aluminum Enhanced Trigger Guard Drop in Replacement for AR15/M4 V Shape for better use of gloves Non-Folding Magpul Trigger Guard Rounded Edges All Mounting Hardware...$19.95 -
Magpul MOE K-2 AR Pistol Grip - OD Green
$20.95Magpul MOE K-2 AR Pistol Grip - OD Green Replacement for AR15/M4 pistol-grip One-piece reinforced polymer construction More vertical grip angle than A2 grips Aggressive TSP texture$20.95 -
Out of stock
Magpul Moe Plus Grip With Moe Stock - Black
$68.95Upgrade your rifle's ergonomics, control, and shoulder stability with the Magpul MOE Plus Grip & MOE Carbine Stock Combo in Black. Bringing together two of Magpul's most trusted lower receiver...$68.95 -
Out of stock
Phase5 Hex-2 AR15 Pistol Buffer Tube
$59.95Phase5 Hex-2 AR15 Pistol Buffer Tube Specifically Designed to Fit Sig SB15 Stabilizing Brace Includes Castle Nut, End Plate and Foam Pad Black Finish Compatible with Milspec AR15/M4...$59.95 -
Out of stock
RADIAN WEAPONS AR15 AMBIDEXTROUS TALON SAFETY SELECTOR 2-LEVER KIT - RED
$59.95AMBI TALON SAFETY SELECTOR 2-LEVER KIT - RED 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...$59.95 -
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...Sale: $119.95MSRP: $169.95 -
Out of stock
Strike Industries Advanced Receiver Extension - FDE
$52.95Strike Industries Advanced Receiver Extension - FDE The Strike Industries Advanced Receiver extension brings an updated aesthetic and increased functionality to an often neglected, yet highly...$52.95