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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Rise Armament Advanced Performance Trigger - Black
$259.99Rise Armament Advanced Performance Trigger Single-stage AR trigger Lightning fast Quik-Klik reset you can feel and hear for rapid follow-up shots Lightened trigger pull with icicle-crisp break to improve accuracy Combines straight trigger...$259.99 -
Rise Armament RAVE Super Sporting Trigger - Flat Bow
$149.99Rise Armament RAVE Super Sporting Trigger - Flat Bow Precise Manufacturing Long Term Reliability Durable Construction 3.5 lb pull weight Single Stage Trigger Includes Anti-Walk Pins$149.99 -
SAFETY SELECTOR - AR15
$9.99AR15 SAFETY SELECTOR Compatible with AR15/M4 Lower Receivers American Made$9.99 -
Out of stock
SKELETONIZED ELITE TRIGGER GUARD - FLAT DARK EARTH
$25.99PREMIUM SKELETONIZED ELITE TRIGGER GUARD - FDE 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 serving...$25.99 -
Out of stock
Tactical Dynamics Skeleton Stock - Tactical Grape
$109.00Tactical Dynamics Skeleton Stock Finished in Tactical Grape Cerakote Made in the USA Compatible with Milspec Carbine Buffer Tube Machined from 6061-T6 Aluminum Specs 6 3/4" Long 5 1/4" Contact Area 1 1/4" Wide 9.65oz$109.00 -
On Sale
Tactical Dynamics Skeleton Stock - Tequila Sunrise
Sale: $56.00MSRP: $109.00Tactical Dynamics Skeleton Stock Finished in Tequila Sunrise Cerakote Made in the USA Compatible with Milspec Carbine Buffer Tube Machined from 6061-T6 Aluminum Specs 6 3/4" Long 5 1/4" Contact Area 1 1/4" Wide 9.65ozSale: $56.00MSRP: $109.00 -
Out of stock
TIMBER CREEK AR EXTENDED MAGAZINE RELEASE - BLUE ANODIZED
$19.99AR EXTENDED MAGAZINE RELEASE - BLUE ANODIZED Mag Release in Blue anodized finish Lightweight Made in the USA Manufactured by Timber Creek Outdoors$19.99 -
TIMBER CREEK AR MAGAZINE RELEASE BUTTON - FLAT DARK EARTH
$7.99AR MAGAZINE RELEASE BUTTON - FLAT DARK EARTH Lightweight billet aluminum Choose from a variety of colors Manufactured by Timber Creek Outdoors Made in the USA Flat Dark Earth Cerakote Finish$7.99 -
Out of stock
Adaptive Tactical Lightweight Tactical Grip - Woodland Camo
$25.99Adaptive Tactical Lightweight Tactical Grip - Woodland Camo AR-15/M-16/M4 Pistol Grip Constructed from High Grade Reinforced Polymer One Piece Construction Non-Conductive Ergonomic Aggressive Design Lightweight and...$25.99 -
Geissele 2 Stage Trigger - G2S
$170.00Geissele 2 Stage (G2S) Trigger Type: 2 Stage 1st Stage Weight: 2.5lbs. 2nd Stage Weight: 2.0lbs. Total Pull Weight: 4.5lbs. Adjustable: No Recommended Use: Law Enforcement, Home Defense, Hunting Pin Size: Mil-Spec$170.00 -
Out of stock
GRID DEFENSE MIL-SPEC LOWER PARTS KIT WITH MAGPUL MOE K FDE GRIP
$99.99GRID DEFENSE MIL-SPEC LOWER PARTS KIT WITH MAGPUL MOE K FDE GRIP This complete lower parts kit includes all the components needed to build out your lower receiver minus the buffer tube assembly. Includes: Magpul MOE K FDE Grip Magpul MOE Trigger...$99.99 -
Magpul MOE-K Grip AR15/M4 - Black
$20.95Magpul MOE-K Grip - Black Compact and Thin Minimalist Design Constructed from Reinforced Polymer More Angled Vertical Grip than Standard A2 Grip Aggressive TSP Texture Weighs 2.4oz Made in the USA$20.95 -
Mission First Tactical Battlelink Extreme Duty Minimalist Stock - Scorched Dark Earth
$69.99Mission First Tactical Battlelink Extreme Duty Minimalist Stock - Scorched Dark Earth Slide-on replacement for collapsible butt stock Angled non-slip rubberized removable buttpad allows faster presentation Multiple Sling Slots with single point...$69.99 -
Rise Armament Rave Trigger - Red
$149.99Rise Armament Rave Trigger - Red Smooth, crisp break and a short Quik-Klik™ reset you can feel for improved accuracy Comfortable curved trigger blade that sits farther back for enhanced control - also available with a straight, flat blade as...$149.99 -
Rise Armament Rave Trigger Flat Bow - Red
$149.99Rise Armament Rave Trigger Flat Bow - Red Smooth, crisp break and a short Quik-Klik™ reset you can feel for improved accuracy Comfortable curved trigger blade that sits farther back for enhanced control - also available with a straight, flat...$149.99 -
Out of stockOn Sale
SB Tactical SBA5 Adjustable Pistol Brace With Grid Defense Buffer Tube Kit - Black
Sale: $119.95MSRP: $169.95SBA5 with Grid Defense Buffer Kit - Black SB Tactical SBA5 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
Strike Industries Extended Pivot/Takedown Pins - Chrome Coating
$15.95Strike Industries Extended Pivot/Takedown Pins - Chrome Coating Strike industries extended takedown pins and pivot pins are ideal for shooters looking for a custom look and that run multiple upper receivers off of a single lower. Made out of...$15.95 -
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- Ergonomic non-pistol grip for AR$43.95 -
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 Finish$39.99