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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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 -
On Sale
STRIKE INDUSTRIES MAGAZINE CATCH - FDE
Sale: $15.95MSRP: $18.95STRIKE INDUSTRIES MAGAZINE CATCH - FDE Enhanced Magazine Catch: Steel 6061-T6 Aluminum Release Button Solid Billet Aluminum Construction Unique Anodized Colors FDE FinishSale: $15.95MSRP: $18.95 -
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 -
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 These CNC machined pins are drop in replacements for Mil-Spec lowers and allow easier disassembly of your rifle...$19.99 -
Armaspec Superlight AR-15 Lower Parts Kit - Red
$84.99Armaspec Superlight AR-15 Lower Parts Kit - Red Includes Armaspec Enhanced Lower Parts Compatible with most AR-15 lowers Made in the U.S.A. Lifetime warranty AR-15 lower receiver 1x Armaspec SFT 45/90 Safety Selector 1x Bolt Catch 1x...$84.99 -
Grid Defense 9mm Lower Parts Kit
$14.98Grid Defense 9mm Lower Parts Kit Ejector 2 Ejector Set Screws Magazine Release Button Magazine Release Button Roll Pin Magazine Release Spring IF YOU PURCHASE A GRID DEFENSE 9MM 80% LOWER RECEIVER THIS KIT IS INCLUDED IN THAT PURCHASE. THIS KIT...$14.98 -
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 Resistant Battery Storage Tubes Located on the Left and Right...Sale: $76.95MSRP: $84.95 -
Out of stock
MAGPUL MOE CARBINE STOCK - GRAY
$44.95Magpul MOE Carbine Stock - Gray Made in the USA Mounts on Mil-Spec Carbine Receiver Weight: 8.0oz Compatible with Magpul ASAP, ASAP QD and other Receiver Mount Sling Attachments Sloping Cheek Weld Shielded Release Latch to Prevent Snagging Side...$44.95 -
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 Weight: 2.9oz Thickness: 1.2" Height: 4.1" Grip Angle: 17...$20.95 -
MIL-SPEC PISTOL BUFFER TUBE - OD GREEN
$25.00MIL-SPEC PISTOL BUFFER TUBE - OD Green Made From: Forged 7075 aluminum Olive Drab Green Cerakote Finish **Buffer, Castle Nut, End Plate Not Included**$25.00 -
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 Receivers Made in the USA$59.95 -
VITAL TRIGGER GUARD - ROBINS EGG
$15.99VITAL TRIGGER GUARD - ROBINS EGG With it's slim design, it offers coverage where it is needed serving its purpose: but yet not getting in the way when inquiring your target. Material: Plastic AR Trigger Gaurd Weight: 1.54oz Includes: Pin...$15.99 -
AR Ambidextrous Safety Selector
$20.99AR Ambidextrous Safety Selector Ambidextrous Safety Selector Fits AR 5.56/.223 CNC Machined out of Aircraft Grade Aluminum Mil-Spec Finish: Black Anodized Weight: .5 oz Choose between 45 degree short throw and 90 degree...$20.99 -
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