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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HAMMER SPRING - AR15
$2.99HAMMER SPRING - AR15 Compatible with AR15/M4 Lower Receivers American Made$2.99 -
Out of stock
Magpul MOE K-2 AR Pistol Grip - FDE
$20.95Magpul MOE K-2 AR Pistol Grip - FDE Replacement for AR15/M4 pistol-grip One-piece reinforced polymer construction More vertical grip angle than A2 grips Aggressive TSP texture Weight: 2.9oz Thickness: 1.2" Height: 4.1" Grip Angle: 17...$20.95 -
On Sale
SB Tactical SBA4 Adjustable Pistol Brace With Grid Defense Buffer Tube Kit - OD Green
Sale: $119.95MSRP: $169.95SBA4 with Grid Defense Buffer Kit - OD Green SB Tactical SBA4 Pistol Stabilizing Brace Complete Grid Defense Buffer Tube Assembly Kit Carbine buffer (3 oz) Carbine buffer spring Carbine stock end plate Carbine stock lock ring-castle nutSale: $119.95MSRP: $169.95 -
Out of stock
SKELETONIZED ELITE TRIGGER GUARD - BURNT BRONZE
$25.99PREMIUM SKELETONIZED ELITE TRIGGER GUARD - BURNT BRONZE This Skeletonized trigger guard is the premium option from the Vital trigger guard that comes standard with all completed lowers. With it's slim design, it offers coverage where it is needed...$25.99 -
Out of stock
Spike's Enhanced Lower Parts Kit
$181.00Spike's Enhanced Lower Parts Kit 556 - Black Better than Mil-Spec quality Five Upgrades Over Standard Parts Kit Battle Trigger Group (Nickel Boron Coated)Billet Tool-less Trigger GuardBlack Ergo GripBlack KNS Anti Rotation Gen 2 Mod 2Ambi Safety Also...$181.00 -
Out of stock
STRIKE INDUSTRIES FANG BILLET TRIGGER GUARD - RED
$21.95STRIKE INDUSTRIES FANG BILLET TRIGGER GUARD - RED Contents:- 1x Aluminum Trigger Guard- 4x M3 Hex Screw- 1x Warning card Features:- Aircraft grade aluminum construction- Magazine reload assist- Cleaner, faster reloads- Lightweight (.4 oz with...$21.95 -
Out of stock
TIMBER CREEK ENFORCER AR PISTOL GRIP - BLACK
$99.99ENFORCER AR PISTOL GRIP - BLACK Weighs 4oz. Skeletonized grip Cerakote finish Manufactured by Timber Creek Outdoors Inc.$99.99 -
TIMBER CREEK ENFORCER AR PISTOL GRIP - BLUE
$99.99TIMBER CREEK ENFORCER AR PISTOL GRIP - BLUE Blue anodized with clear cerakote finish Drop in replacement mounts to standard lower receiver lightweight Skeletonized grip$99.99 -
Magpul CTR Mil-Spec Stock - OD Green
$64.95Magpul CTR Mil-Spec Stock - OD Green Mounts on milspec-sized receiver extension tube Shielded release latch Removable butt-pad Sling mounts$64.95 -
On Sale
Rise Armament Lower Parts Kit - No Fire Control Group
Sale: $40.49MSRP: $44.99Rise Armament Lower Parts Kit - No Fire Control Group Precise Manufacturing Long Term Reliability Durable ConstructionSale: $40.49MSRP: $44.99 -
Out of stock
SKELETONIZED ELITE TRIGGER GUARD - TUNGSTEN GRAY
$25.99PREMIUM SKELETONIZED TRIGGER GUARD - TUNGSTEN GRAY ELITE AR15 TRIGGER GUARD This Skeletonized trigger guard is the premium option from the Vital trigger guard that comes standard with all completed lowers. With it's slim design, it offers coverage...$25.99 -
Strike Industries AR Flip Switch - Red
$43.95Strike Industries AR Flip Switch - Red Package includes:- 2x Shaft Screw- 1x 60/90 Shaft- 1x End Cap- 1x Right Side Flip Switch- 1x Left Side Flip Switch Features- Ambidexterous- Ergonomic Shape- Modular Assembly- Strike 60/90 Option Note: Not...$43.95 -
Out of stock
STRIKE INDUSTRIES FANG BILLET TRIGGER GUARD - BLACK
$19.95STRIKE INDUSTRIES FANG BILLET TRIGGER GUARD - BLACK Contents:- 1x Aluminum Trigger Guard- 4x M3 Hex Screw- 1x Warning card Features:- Aircraft grade aluminum construction- Magazine reload assist- Cleaner, faster reloads- Lightweight (.4 oz with...$19.95 -
Out of stock
TIMBER CREEK AMBIDEXTROUS SAFETY SELECTOR - OLIVE DRAB GREEN
$39.99AMBIDEXTROUS SAFETY SELECTOR - OD GREEN Left or right hand shooters Manufactured in USA Aircraft grade aluminum Drop in replacement part for OEM safety selector ...$39.99 -
TIMBER CREEK AMBIDEXTROUS SAFETY SELECTOR - ORANGE
$39.99AMBIDEXTROUS SAFETY SELECTOR - ORANGE Lightweight material Made in the USA Multiple configurations for shooters Manufactured by Timber Creek Outdoors Inc.+$39.99 -
Out of stock
TIMBER CREEK AMBIDEXTROUS SAFETY SELECTOR - PURPLE
$39.99TIMBER CREEK AMBIDEXTROUS SAFETY SELECTOR - PURPLE Choose from variety of colors Made in the USA Manufactured by Timber Creek Outdoors Billet aluminum material$39.99 -
Out of stock
TIMBER CREEK AR EXTENDED MAGAZINE RELEASE - BURNT BRONZE
$19.99AR EXTENDED MAGAZINE RELEASE - BURNT BRONZE Made in the USA Burnt Bronze Cerakote Finish Compatible with all mil-spec lowers Manufactured by Timber Creek Outdoors Inc.$19.99 -
Out of stock
TIMBER CREEK AR EXTENDED MAGAZINE RELEASE - FLAT DARK EARTH
$19.99AR EXTENDED MAGAZINE RELEASE - FDE Flat dark earth cerakote Aircraft grade billet aluminum Made in the USA Manufactured by Timber Creek Outdoors$19.99 -
On Sale
TIMBER CREEK AR MAGAZINE RELEASE BUTTON - ANODIZED PURPLE
Sale: $7.19MSRP: $7.99AR MAGAZINE RELEASE BUTTON - PURPLE Billet 6061-T6 aluminum Compatible with all Milspec lowers Manufactured by Timber Creek Outdoors Made in the USA Purple Anodized FinishSale: $7.19MSRP: $7.99 -
TIMBER CREEK AR OVERSIZED TRIGGER GUARD - PURPLE
$23.99AR OVERSIZED TRIGGER GUARD - PURPLE Drop in Trigger Guard Larger space for gloved or large firing hand Weight 0.4oz. Manufactured by Timber Creek Outdoors, Inc. Purple Anodized Finish$23.99