Parts & Upgrades
Find quality gun parts and firearm upgrades at American Tactical Supplies. Whether you’re building a custom AR-15, replacing a worn part, or upgrading your trigger, we have what you need.
Our parts inventory includes triggers, barrels, stocks, handguards, bolts, magazines, and more from leading manufacturers. No FFL required for most parts.
Showing 1–16 of 920 results
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.308 80% Lower – Billet
$86.99 Add to Cart -
.308 80% Lower and LR-308/AR-10 Lower Parts Kit (w/ Hammer and Trigger)
$174.99 Add to Cart -
6 Pack: Marlin Rossi 95 Handguard Screws | Replacement
$6 Add to Cart -
80% Lower Fire/Safe Marked – Anodized Black
$54.99 Add to Cart -
80% Lower Patriot Pack
$274.99 Add to Cart -
9mm AR-9 80% Lower Receiver – Glock Compatible – Black
$139.99 Add to Cart -
A2 Front Sight Post Assembly
$7.99 Add to Cart -
A2 Rifle Action Spring
$4.49 Add to Cart -
A2 Rifle Buffer Assembly
$13.99 Add to Cart -
A2 Rifle Buttstock
$49.99 Add to Cart -
A2 Rifle Buttstock Screw
$2.49 Add to Cart -
A2 Rifle Buttstock Spacer
$2.99 Add to Cart -
A2 Rifle Receiver Extension/Buffer Tube
$24.99 Add to Cart -
Aero Precision 16″ EPC-9 Enhanced 9mm Complete Upper Receiver
$530 Add to Cart -
Aero Precision 16″ EPC-9 Enhanced 9mm Complete Upper Receiver
$520 Add to Cart -
Aero Precision 8.3″ EPC-9 Enhanced 9mm Complete Upper Receiver
$450 Add to Cart