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 MAGAZINE CATCH - BLACK
$18.95STRIKE INDUSTRIES MAGAZINE CATCH - BLACK Enhanced Magazine Catch: Steel 6061-T6 Aluminum Release Button Solid Billet Aluminum Construction Unique Anodized Colors Black Finish$18.95 -
STRIKE INDUSTRIES MAGAZINE CATCH - FDE
$18.95STRIKE INDUSTRIES MAGAZINE CATCH - FDE Enhanced Magazine Catch: Steel 6061-T6 Aluminum Release Button Solid Billet Aluminum Construction Unique Anodized Colors FDE Finish$18.95 -
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 -
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 -
Out of stock
TIMBER CREEK AR TAKEDOWN PIN SET - ORANGE
$19.99AR TAKEDOWN PIN SET - ORANGE Made in USA Anodized finish Compatible with AR15/M4 lower receivers Machined from billet aluminum These CNC machined pins are drop in replacements for Mil-Spec lowers and allow easier disassembly of your...$19.99 -
Out of stock
TIMBER CREEK ENFORCER AR PISTOL GRIP - RED
$99.00TIMBER CREEK ENFORCER AR PISTOL GRIP - RED Lightweight Made in the USA Red anodized with clear cerakote Mounts to any standard milspec receiver$99.00 -
$2.99 -
Out of stock
Aero Precision AR-15 Lower Parts Kit without Fire Control Group
$34.99Aero Precision AR-15 Lower Parts Kit without Fire Control Group Takedown/pivot Spring Takedown/pivot detent Takedown pin Pivot pin Bolt Catch Bolt Catch Spring Bolt Catch buffer Bolt catch roll pin Safety Selector Safety Selector...$34.99 -
ALG DEFENSE DROP IN TRIGGER
$65.00ALG DEFENSE DROP IN TRIGGER Single Stage Stock Trigger Reliability Smoother Pull than Stock Triggers 6.5 Pound Pull$65.00 -
Out of stock
Armaspec Superlight AR-15 Lower Parts Kit - FDE
$84.99Armaspec Superlight AR-15 Lower Parts Kit - FDE 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 -
BAD-EPS Enhanced Takedown and Pivot Pin Set AR-15
$29.95BATTLE ARMS DEVELOPMENT ENHANCED PIVOT & TAKEDOWN PIN SET AR15 / M16 / M4 Compatible - Fits all AR15/M16/M4 lower receivers with mil-spec .250in diameter front pivot and rear take-down pin holes Patent Pending Pivot Pin & Take-down...$29.95 -
Out of stock
Battle Arms Development EMMR Large Enhanced Modular Magazine Release
$35.95BAD-EMMR Large Enhanced Modular Magazine Release BAD-EMMR-L (Enhanced Modular Magazine Release - Large Finger Pad) for the AR15/AR10. Precision CNC Machined for billet 7075-T6 Aluminum, the BAD-EMMR features, unique, patent-pending three...$35.95 -
Out of stock
Battle Arms Development Enhanced Bolt Catch
$15.00Battle Arms Development Enhanced Bolt Catch 8620 heat treated steel Investment cast Manganese phosphate finish Versatile modular design Oversize control surfaces Raised T-shaped heel Compatible with Norgon ambi-catch Elegant tapered control...$15.00 -
Battle Arms Development Enhanced Pivot & Takedown Pin Set - Titanium
$38.95Battle Arms Development Enhanced Pivot & Takedown Pin Set - Titanium AR15 / M16 / M4 Compatible - Fits all AR15/M16/M4 lower receivers with mil-spec .250in diameter front pivot and rear takedown pin holes. Patent Pending Pivot Pin &...$38.95 -
Out of stock
Elftmann Ambi Speed Safety - Black
$39.95Elftmann Ambi Speed Safety Made in the USA Ambidextrous Safety Selector Push Safety Design Includes Detent Extremely Fast On-Off Stainless Steel Mil-Spec Compatible Works with AR15/AR10$39.95 -
Elftmann Tactical 3 Gun Trigger - Curved
$279.00Elftmann 3 Gun Trigger | Mil-spec AR-15 Trigger Features Fits any mil-spec AR-15 (Large pin Colt available) Absolutely Drop-Safe regardless of pull-weight Factory set Pull-weight is approximately 50% lighter than that of a standard AR-15...$279.00 -
Out of stockOn Sale
Grid Defense AR-15 80% Lower Receiver With Trump 45-47 Magwell Engraving
Sale: $65.00MSRP: $150.00Grid Defense AR-15 80% Lower Receiver With Optional Fire/Safe Engravings Machined from 7075-T6 Aluminum Forging Flared and broached magazine well Rear upper lug pocket cut out Fits all mil-spec upper receivers Made in the USA Optional Fire/Safe...Sale: $65.00MSRP: $150.00