AR-15 / M4

Introducing the E1M, a "modern" version of the XM177E1 with either an A1 or A2 upper depending on preference. The result is an extremely functional M-LOK capable carry-handle esthetic that means permanent sight availability even when it falls off a...

Genuinely mil-spec, you can rely on the same small parts as the military. Includes: Mil-Spec Small Parts 2x Takedown/Pivot Pin Detents 2x Hammer/Trigger Pins 1x Selector Detent 1x Bolt Catch Pin 1x Bolt Catch Plunger 1x Buffer Retainer   Mil-Spec...

Now w/ OCKS Carrier Key Screws Microbest is one of the finest manufacturers of mil-spec bolt carrier groups for the military and small arms manufacturers. These are individually High Pressure Tested and then undergo a Magnetic Particle Inspection. We...

*Limited Time*: Check out our stubby 727 variant with a Colt 10.3" barrel here. We're big fans of the M4 platform and that includes the close ancestors to the M4 like the 727 and XM4. This upper receiver group features a 14.5" Chrome-Lined 5.56...

***Does Not Include Carrier*** Mil-Spec Bolt - CHROME C158 Steel Shot Peened High Pressure Tested (HPT)  Magnetic Particle Inspected (MPI) *Ejector is either Chrome or Phosphate Chrome Silicon Ejector Spring by Sprinco Mil Spec Extractor -...

Another GREAT Value in a Mil-Spec Trigger. Smooth, Consistent and Reliable.   If you like a traditional AR trigger, then you're going to love this one. We think these are the best of the breed, among the finest entry-level triggers available. These...

We're big fans of the M4 platform and that includes the close ancestors to the M4 like the CAR-15/723, one of our favorite variants that makes frequent cameos in popular culture. This upper features an LMT 14.5" M4 Chrome-Lined 5.56 Carbine-Length Barrel...

***Cosmetic Blemish*** These are the same spec as our ALL-CHROME w/ PHOSPHATE EXTRACTOR BCGS. They will function properly 100% of the time but may exhibit cosmetic irregularities.    These have Mil-Spec Carrier Key Screws. If you prefer the...

The oil you don't have will do you no good-- so keep it handy. Introducing our premium-grade arf-o-matic Machine Oil, a super-convenient and compact 10mL (1/3 oz.) bottle of high-performance lubricant specially optimized for firearms and related...

We're big fans of the M4 platform and that includes the close ancestors to the M4 like the CAR-15/723 and its shorter barrel brother 733, another variant that makes frequent cameos in popular culture. This upper features a Colt 11.5" M4 Chrome-Lined 5.56...

Please Read: This is for either the M-16 spec BOLT KIT alone, or the M-16 spec CARRIER alone, each in DLC finish. DLC Finish on Outer Wear Surfaces, Phosphate Extractor and Phosphate/CL Gas Key with OCKS Carrier Key Screws.  Microbest is one of the...

***Cosmetic Blemish*** These are the same spec as our PREMIUM BCGS. They will function properly 100% of the time but may exhibit cosmetic irregularities.    The Ultimate Hard-Use 5.56 Bolt Carrier Group: These aren't designed to be pretty...

Dead Air's flash hider has a unique design featuring mass shifted equal length tines. The end result is a flash hider that does not “ping.” It is compatible with DA's Sandman Series and KeyMo equipped suppressors. The KeyMo flash hider is...

The Geissele Super Duty Upper (Stripped) features the quality and worksmanship you've come to expect from the Geissele name.   At the heart of this stripped upper is a Super Duty upper receiver that mates to a MK16 Super Modular rail via a center...

The Geissele Super Duty Upper (Stripped) features the quality and worksmanship you've come to expect from the Geissele name.   At the heart of this stripped upper is a Super Duty upper receiver that mates to a MK16 Super Modular rail via a center...

Fine-tune your AR-15 gas system with the Odin Works Adjustable Gas Block. The Inconel adjustment screw provides 20 clicks of adjustment locked in place by a ball detent, allowing you to dial in gas pressure to specific loading or buffer configurations...

This AR15 Upper features a 14.5" 5.56 Carbine-Length Barrel w/ Pinned FSB, Carbine Handguard  Upper Features: No Cage Code as of 2024 Upper: Standard AR15 Upper Receiver Barrel: 14.5" 5.56 CMV Carbine-Length Barrel w/ Pinned FSB,  Handguard: M4...

Microbest is one of the finest manufacturers of mil-spec bolt carrier groups for the military and small arms manufacturers. We recommend degreasing and lubricating before installation. Ships in OEM packaging. Features: All-Chrome M-16 BCG Cam Pin 4340...

The Geissele UPTG is meticulously machined from 7075-T6 aluminum. By employing 5-Axis machining technology the GA team is able to reach every surface of the trigger guard and artfully remove unnecessary material. What this means for the user is they have...

The MOE RL Carbine Stock is a streamlined, A-frame carbine stock that replaces OEM stocks and provides clean aesthetics and ease of use. The easily accessible, unobtrusive reversed adjustment lever is inset into the front of the stock, allowing the...