Parts
Our amazing offer consists of a great variety of AR-10, AR-15, and pistol parts and accessories. Purchase upper receivers, muzzle devices, handguards, BCG, barrels, triggers, magazine extensions, etc., and start modifying your firearm today.
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Firearm parts
Rainier Arms is the best place to purchase parts and accessories for your rifle or pistol online, and all that for more than affordable prices. Look no further, you can find here everything that comes to your mind and more! The best manufacturers in the business, like Killer Innovations, Lantac, Next Level Armament, Rainier Arms LLC, Apex Tactical Specialties, and many more are here to offer you their high-quality products. Select your preferred part and make your AR-10, AR-15 or pistol a unique piece of firearm.
- Model Glock 19 Remove This Item
- Platform Glock Remove This Item
- Option Glock Remove This Item
- 9mm, .40, .357 1 item
- .45 ACP 1 item
- Gen 1-3 1 item
- Gen 3 12 items
- Gen 4 9 items
- GEN 4/5 1 item
- Gen 5 6 items
- Glock .40 cal Gen4 1 item
- Glock 9mm Gen4 1 item
- Glock Gen 5 2 items
- Large Backstrap 1 item
- Med Backstrap 1 item
- No Backstrap 1 item
- G19 9 items
- G42 1 item
- G43 2 items
- Tritium Stealth Sights 1 item
- Aluminum 1 item
- Battleworn 1 item
- Black 4 items
- Black/Black 2 items
- Black DLC 1 item
- Black/Nickel 2 items
- Black/TiN 2 items
- Blue 2 items
- Cerakote 1 item
- Clear 1 item
- DLC 13 items
- Gold 2 items
- Gray 2 items
- Grey 2 items
- Polished 1 item
- Red 1 item
- Anodize 2 items
- Titanium Nitride (TiN) 9 items
- Molecular Dense Coating (MDC) 3 items
- Agency Arms 12 items
- Apex Tactical Specialties 8 items
- ARC Division 1 item
- Armaspec 1 item
- Battle Arms Development 4 items
- CAA 3 items
- CMC Triggers 2 items
- Danger Close Armament 1 item
- DPM Systems Technologies 1 item
- Faction 1 item
- Fortis MFG 2 items
- Kagwerks 1 item
- Killer Innovations 11 items
- L2D Combat 3 items
- Magpul Industries 2 items
- NIGHT FISION 1 item
- Nomad Defense 2 items
- Norsso 4 items
- Radian Weapons 1 item
- Reptilia Corp 1 item
- Swampfox 1 item
- Tam Tamography 1 item
- Timney Triggers 2 items
- Trinity Nevada 3 items
- True Precision 2 items
- Tyrant Designs 13 items
- Basepad 2 items
- Compensator 8 items
- Extended Slide Stop 1 item
- Guide Rod 1 item
- Handgun Barrel 12 items
- Handgun Sights 1 item
- Magazine Release 2 items
- Magwell 10 items
- Parts Kit 1 item
- Pistol Accessory 3 items
- Pistol Part 7 items
- Recoil Spring 1 item
- Slide 19 items
- Stabilizer Kit 3 items
- Trigger 14 items
What are the most common barrel thread patterns for pistols and rifles?
For .22LR, .22MAG, .17HMR, 9mm, and .223/5.56 NATO the most common thread pattern would be 1/2x28, with some exceptions for 9mm and .223/5.56 NATO firearms. As for .308/7.62mm and .338 Lapua Magnum, the thread pattern that is most commonly used is 5/8x24, with a few exceptions. Another typical thread pattern is 9/16x24 and it is mostly used for .40 S&W weapons.
Single triggers or two-stage triggers?
Whichever you choose, you cannot go wrong. The single trigger is fast and simple to use; as soon as you apply a small amount of pressure, the firearm goes off. Two-stage trigger is extremely accurate and you know precisely when the shot is going to be fired. The first stage prepares you for the second one, when the trigger pushes the hammer up causing the firearm to discharge. So, it is up to you to make a choice.
