Building your own M4 rifle allows you to create truly unique ARs with endless options for customization from top to bottom. We are a veteran-owned online gun parts dealer dedicated to providing the highest quality AR parts and accessories for those looking to build or upgrade their ARs with the most reliable, safest parts possible. Avoid using harsh chemicals or solvents that could damage the trigger mechanism, and inspect it regularly for any signs of wear or damage. An FRT-trigger works by using a spring-loaded mechanism to force the trigger to reset after firing a round. Installing an FRT-trigger is a relatively simple process that can be done at home with basic tools.
- It is engineered exclusively for the FN PS90 equipped with a factory-configured semi-automatic trigger pack.
- We’ve covered different AR triggers and their builds.
- For a first-time AR owner, it’s not a bad idea to work with a mil-spec trigger.
- That means each bolt is individually tested at a proof load.
Bravo Company Manufacturing (BCM) M16 BCG – Best Overall BCG
Chambered in 5.56x45mm NATO, the rifle will accept both magazine and linked ammunition belt. DRY FIRE NOT RECOMMENDED; repeated trigger cycling without a cartridge or snap cap can cause damage. Professional installation by a qualified gunsmith is recommended but not required.
Examples of Single-Stage Triggers
I’m Eric Hung, the founder of Pew Pew Tactical, and I love guns. So, if you’re building an SHTF, zombie-apocalypse-proof rifle, go with a regular BCG. Any reduction in recoil and firearm movement, in general, helps you stay on or get back on target as you fire.
That means each bolt is individually tested at a proof load. Mil-spec doesn’t mean the best or the worst; it’s just in spec for a military contract. But all it really means is that it is built to certain dimensional specifications so that it can work in military firearms. The main takeaway here is just get a full-auto weighted BCG if reliability is a concern. Full-auto profile means that the BCG is slightly longer and heavier, with an additional lug at its rear. Let’s clear the air first – “full-auto” BCGs are legal and don’t magically make your AR-15 automatic.
“Match-grade trigger” is a term some companies use to describe a trigger that is higher performing than a mil-spec one. Rather than having to wrestle each spring-loaded component into place inside the receiver, the entire trigger unit simply drops into place inside the receiver. This self-contained design is also where the “drop-in” trigger gets its name. Instead, the pins that normally hold a mil-spec trigger in place are used to ensure the housing is located in the right position inside the lower receiver.
As an AR trigger can change slightly over time and wear, it’s a logical thought to wonder whether there’s an “expiration date” for your drop-in AR trigger. However, the geometry of the sear surfaces ensures there will always be a secure, repeatable engagement between the hammer and trigger. The shooter again applies pressure to the trigger blade, starting the process all over again. As the AR–15 bolt cycles rearward to eject a spent cartridge and pick up a new cartridge from the magazine, it also pushes the hammer back down into the lower receiver. Once the trigger sear clears the hammer sear, the hammer, under spring tension, gets driven upward toward the firing pin. As the rear of the trigger travels upward, the sear surface at the front slides across the engagement surface located on the hammer.
So you want to pick a trigger that maximizes the likelihood of every round going exactly where you want, when you want. However, there are many who argue that a lighter trigger is safer for home defense since it typically frt trigger leads to more accurate shot placement. For home-defense use, going with a slightly heavier, combat-style trigger might be a safer bet. Well, it still depends on what you’re planning to use the gun for. Obviously, you can’t shoot it because there’s no trigger! There, you need to decide what kind of trigger to put in your AR-15.