Expo Arms

The Expo Arms Bolt Carrier Group is a great choice for any build. This drop-in AR-15 BCG features a corrosion resistant hard chrome finish, MIL-SPEC dimensions, and a magnetic particle inspected carpenter 158 steel bolt. Crafted from domestically sourced 8620 steel, the M16 cut carrier includes a gas key fastened by properly staked grade 8 screws. Made in the U.S.A. and covered by a lifetime warranty, you can count on this BCG for a lifetime of service. Features: - .233/5.56 NATO - Hard chrome finish - M16 cut - Aircraft quality 8620 steel carrier - 4130 steel gas key

The Expo Arms Stainless Steel gas tube is an excellent option to get your new rifle up and running. The corrosion resistant stainless steel construction ensures a life time of service. Each gas tube includes a gas block roll pin. Features: - Stainless steel construction - Includes gas tube roll pin - 11.75" total length This gas tube is designed for barrels with mid-length gas systems that measure roughly 9" from the barrel's gas port to the front face of the receiver. Proudly made in the U.S.A. Back Specifications Brand: Expo Arms Gas System Length: Mid-Length

Occasionally, we get open box products in-stock. These items may have open packaging or slightly different packaging, which means a discounted price for you! Each listed Open Box product is in very limited supply, so act fast while they are still in stock! Their original warranties still apply.

Occasionally, we get open box products in-stock. These items may have open packaging or slightly different packaging, which means a discounted price for you! Each listed Open Box product is in very limited supply, so act fast while they are still in stock! Their original warranties still apply.

The Expo Arms Bolt Carrier Group is a great choice for any build. This drop-in AR-15 BCG features a tough manganese phosphate finish, MIL-SPEC dimensions, and a magnetic particle inspected carpenter 158 steel bolt. Crafted from domestically sourced 8620 steel, the M16 cut carrier includes a gas key fastened by properly staked grade 8 screws. Made in the U.S.A. and covered by a lifetime warranty, you can count on this BCG for a lifetime of service. Features: - .233/5.56 NATO - Hard chromed bore and gas key - Manganese Phosphate finish - M16 cut - Aircraft quality 8620 steel carrier

The Forged and Stripped AR-15 Upper Receiver is the foundation of your upper build. This receiver accepts MIL-SPEC components, including forward assist and port door assemblies. Precision machined from a 7075-T6 aluminum forging, this upper is protected by a MIL-SPEC Type III Class 2 hardcoat anodized finish. Built to extremely precise tolerances, these upper receivers go through a rigorous quality control process to ensure they are built to high quality with a premium finish. NOTE: Port door and forward assist hardware not included. Features: - 7075-T6 forged aluminum

The Expo Arms H2 AR-15 Carbine Buffer with 4.6oz. weights is perfect for your next SBR build. The H2 buffer weight is ideal for those looking to build a suppressed short barreled rifle AR-15. The heavier buffer weight helps to increase dwell time while decreasing cyclic rate as well as recoil especially with the increased gas pressure from a suppressed system. This H2 buffer also features a 7075 Aluminum body construction. Features: - 7075 Aluminum construction - Heavy 4.6oz. weight - Ideal for suppressed short barrel rifles - For carbine length buffer tubes Back Specifications

This Expo Arms AR-15 Super Charging Handle (manufactured by Geissele Automatics) is a fully ambidextrous, dual-levered, gas-busting charging handle designed specifically for the AR platform. Machining the Super Charging Handle from a solid block of 7075-T6 aluminum allows for the levers to be dual contoured with a checkered handling surface to aid with gloved use. The levers themselves have been extended over the standard AR-15 charging handle for faster and easier operation regardless of which side you're charging from.

The Expo Arms H3 Carbine Buffer is an easy and inexpensive upgrade for your AR-15. Weighing in at a hefty 5.2 oz, the H3 is ideal for exceptionally over gassed rifles, suppressed shooting, or AR-308's using GI-length 8" receiver extensions. These buffers feature a machined aluminum body with a durable black hardcoat anodized finish and flat dark earth rubber bumper to dampen recoil. This 3.25" buffer is compatible with AR-15 MIL-SPEC and Commercial spec receiver extensions or 8" GI-spec AR-10/AR-308 receiver extensions. Proudly made in the U.S.A. Back Specifications Brand: Expo Arms

The Expo Arms® Handguards are machined from high-quality 6061-T6 aluminum bar stock, allowing for a slim profile with plenty of M-LOK slots for attaching grips, lights, and other accessories. This is a free float handguard that comes with a 6061-T6 aluminum barrel nut and anti-rotation tabs for an extremely strong lock up that will hold tight on any Mil-Spec receiver. At 15” in length, this M-LOK handguard will run great on any 16” AR-15s and has plenty of internal diameter for compatibility with low profile gas blocks.

The Expo Arms E-Series Handguards are machined from high-quality 6061-T6 aluminum bar stock, allowing for a slim profile with plenty of M-LOK slots for attaching grips, lights, and other accessories. This is a free float handguard that comes with a 6061-T6 aluminum barrel nut and anti-rotation tabs for an extremely strong lock up that will hold tight on any Mil-Spec receiver. At 9.5” in length, this M-LOK handguard will run great on any SBR with 10” barrel and has plenty of internal diameter for compatibility with low profile gas blocks.

Expo Arms X Mega Arms Forged Stripped AR-15 Lower Receiver The AR-15 Forged Stripped Lower Receiver is the foundation of your build. This receiver accepts MIL-SPEC components as well as a variety of aftermarket parts, so you can truly customize your rifle. Precision machined from a 7075-T6 aluminum forging, this AR-15 lower is protected by a MIL-SPEC Type III Class 2 hardcoat anodized finish. Built to extremely precise tolerances, these upper receivers go through a rigorous quality control process to ensure they are built to high quality with a premium finish. Features:

Expo Arms X Mega Arms Forged Stripped AR-15 Lower Receiver The AR-15 Forged Stripped Lower Receiver is the foundation of your build. This receiver accepts MIL-SPEC components as well as a variety of aftermarket parts, so you can truly customize your rifle. Precision machined from a 7075-T6 aluminum forging, this AR-15 lower is protected by a MIL-SPEC Type III Class 2 hardcoat anodized finish. Built to extremely precise tolerances, these upper receivers go through a rigorous quality control process to ensure they are built to high quality with a premium finish. Features:

The Expo Arms Combat Series AR-15 Barrels are designed to give you a premium barrel at an affordable cost. This AR barrel is made from Mil-Spec 11595E certified 4150 steel and features a chrome lined bore to withstand high temperatures for a long barrel life. This 10.3” model features a SOCOM profile with a carbine gas system and .070” port diameter for reliable function. Additionally, the .750 gas seat diameter is dimpled for securely attaching set screw gas blocks.

Looking for an affordable option to give your AR-10 a classic look? The Expo Arms A2 birdcage flash hider will help you complete your .308 carbine or rifle build. It is constructed from high strength steel with a manganese phosphate coating and 5/8x24 threads to fit on any .30 caliber barrel. It features ports on the top and sides to reduce muzzle flash with no ports on the bottom to reduce the amount of dirt kick-up when shooting prone. This flash suppressor is a great addition to your build whether you are building a 20” .308 rifle or 16” 7.62 carbine and is guaranteed to get the job done.

The Expo Arms Bolt Carrier Group is a great choice for any build. This drop-in AR-15 BCG features a corrosion resistant salt bath nitride finish, MIL-SPEC dimensions, and a magnetic particle inspected carpenter 158 steel bolt. Crafted from domestically sourced 8620 steel, the M16 cut carrier includes a gas key fastened by properly staked grade 8 screws. Made in the U.S.A. and covered by a lifetime warranty, you can count on this BCG for a lifetime of service. Features: - .233/5.56 NATO - Salt bath nitride finish - M16 cut - Aircraft quality 8620 steel carrier

The Expo Arms Ambidextrous AR-15 Safety Selector is built out of high quality steel to Mil-Spec dimensions for a precise fit in your new lower receiver. Features a durable Manganese Phosphate finish for long term wear and corrosion resistance. Features a standard 90° throw for reliability and is compatible with all AR-15 and AR-10 lower receivers. Features: - 90° throw - Ambidextrous levers - Mil-Spec design - Machined from steel - Manganese Phosphate finish - Utilizes 6-40 x 3/8 screws - Compatible with AR-15 and AR-10 lowers

Found exclusively at Primary Arms, Expo Arms represents the best combinations of AR15 upper and lower receivers, AR aftermarket accessories, and parts at unbelievable prices and superior functionality. If you're a budget-builder and in the market for a complete AR-15 upper receiver, this Expo Arms Combat Series upper with a 16-inch barrel chambered for 5.56 NATO rounds and sporting an Expo Arms 6315 flash hider is a perfect upper for your build. Features: - Barrel Length: 16 Inches - Barrel Finish: Nitride - Barrel Contour: SOCOM - Barrel Material: 41V50 Stainless Steel

The Expo Arms X ALG Defense Quality Mil-Spec (QMS) Trigger takes the bomb-proof reliability and durability of a standard Mil-Spec trigger and removes the majority of grittiness you're used to. Like a proper Mil-Spec trigger, the pull will not fall below the 5.56 lbs specified for the M4 or M16, making it an ideal option for shooters who need to meet regulations but don't want to settle for a gritty, inconsistent pull. Features: - Manufactured by ALG Defense - Mil-Spec design - Single Stage - Smooth trigger pull Back Specifications Adjustable: Non-Adjustable Brand: Expo Arms

The Expo Arms MIL-SPEC 6-position buffer tube is just what you need to mount your favorite MIL-SPEC carbine stock to your AR-15. The durable aluminum construction, combined with hardcoat anodized finish will provide a lifetime of service. With 6 stock positions to choose from, the perfect length of pull can be quickly set for nearly any shooter.  Features: - 7075-T6 aluminum - Hardcoat anodized - 6-position tube - MIL-SPEC - Proudly made in the U.S.A. Back Specifications Brand: Expo Arms Finish: Hardcoat Anodized Fitment: MIL-SPEC - 1.14 in Material: Aluminum - 7075-T6