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.
- Price $0.00 - $99.99 Remove This Item
- Aeroknox 1 item
- Agency Arms 1 item
- Align Tactical 12 items
- Apex Tactical Specialties 20 items
- ARC Division 4 items
- Armaspec 1 item
- Arms Republic 6 items
- Ascalon Arms 1 item
- Battle Arms Development 3 items
- CAA 1 item
- Dark Hour Defense 2 items
- Devil Dog Concepts 3 items
- DPM Systems Technologies 37 items
- Driven Arms Co. 1 item
- Elzetta Design LLC 1 item
- Emissary Development 1 item
- Empire 2 items
- Faction 1 item
- Faxon Firearms 4 items
- Fortis MFG 1 item
- Forward Controls Design 9 items
- GoGun USA 2 items
- Grayguns 12 items
- Griffin Armament 2 items
- Handleitgrips 9 items
- HB Industries 7 items
- Iron City Rifle Works 1 item
- Kagwerks 3 items
- Killer Innovations 14 items
- L2D Combat 1 item
- Lantac 5 items
- Laugo Arms 1 item
- Lone Wolf Arms 7 items
- Magpul Industries 3 items
- Mirzon 3 items
- Modular Evolution LLC 1 item
- NIGHT FISION 14 items
- Nighthawk Custom 4 items
- Nomad Defense 4 items
- Noveske 1 item
- Obsidian Arms 2 items
- Odin Works 1 item
- Polymer80 1 item
- Radian Weapons 1 item
- Rainier Arms, LLC 6 items
- Rainier Industries 1 item
- Red Dirt USA 5 items
- Reptilia Corp 1 item
- SCT Manufacturing 4 items
- Sig Mechanics 2 items
- Sig Sauer 24 items
- Sprinco (Tactical Springs) 7 items
- Springer Precision 5 items
- Strike Industries 6 items
- Tactical Development 4 items
- Taran Tactical Innovations 6 items
- Toni Systems 4 items
- TruCalibre 1 item
- True Precision 4 items
- Tyrant Designs 48 items
- Wolff Gunsprings 2 items
- ZEV Technologies 1 item
- Beretta 92X 1 item
- Beretta 92FS 1 item
- Beretta 96 1 item
- Beretta 98 1 item
- Canik TP9 1 item
- CZ 75 2 items
- CZ Shadow 2 items
- CZ P-01 1 item
- CZ P-10 7 items
- FNH 509 1 item
- Glock 17 42 items
- Glock 19 49 items
- Glock 19X 10 items
- Glock 20 6 items
- Glock 21 6 items
- Glock 22 25 items
- Glock 23 26 items
- Glock 24 14 items
- Glock 25 8 items
- Glock 26 19 items
- Glock 27 17 items
- Glock 28 5 items
- Glock 29 5 items
- Glock 30 5 items
- Glock 31 25 items
- Glock 32 22 items
- Glock 33 16 items
- Glock 34 29 items
- Glock 35 24 items
- Glock 36 4 items
- Glock 37 20 items
- Glock 38 15 items
- Glock 39 13 items
- Glock 40 5 items
- Glock 41 5 items
- Glock 42 2 items
- Glock 43 14 items
- Glock 43X 18 items
- Glock 44 4 items
- Glock 45 13 items
- Glock 47 3 items
- Glock 48 18 items
- H&K P30 1 item
- H&K VP9 4 items
- Nomad 9 2 items
- Sig P22X 1 item
- Sig P220 3 items
- Sig P226 4 items
- Sig P228 2 items
- Sig P229 3 items
- Sig P238 2 items
- Sig P320 54 items
- Sig P365 20 items
- Sig P365X 6 items
- Sig P365XL 12 items
- Sig P365 X-Macro 3 items
- Sig P938 3 items
- S&W M&P 4 items
- S&W M&P M2.0 4 items
- S&W M&P Shield 5 items
- Springfield Hellcat 5 items
- Staccato 2011 2 items
- FN 509 1 item
- Standard 1 item
- 6lb 1 item
- 6.5lb 1 item
- 4lb 1 item
- (Green) - 13 lbs 2 items
- (Blue) - 15 lbs 2 items
- (Red) - 18 lbs 2 items
- CZ 7 items
- Glock 90 items
- Sig Sauer 32 items
- Smith & Wesson 7 items
- Springfield 1 item
- Left-Hand 2 items
- White/White 1 item
- White/Black 1 item
- Orange/Black 1 item
- White/Blank 1 item
- Flared 1 item
- Accessory 5 items
- Adapter Plate 1 item
- Backplate 3 items
- Basepad 7 items
- Bipod Mount 1 item
- Bolt Catch 1 item
- Charging Handle 3 items
- Compensator 30 items
- Extended Slide Stop 3 items
- Failure Resistant Extractor 1 item
- Firing Pin 2 items
- Flashlight Accessory 1 item
- Grip Accessory 9 items
- Grip Module 7 items
- Guide Rod 28 items
- Handgun Barrel 1 item
- Handgun Grip 3 items
- Handgun Sights 13 items
- Laser 1 item
- Locking Block 2 items
- Magazine 5 items
- Magazine Accessory 1 item
- Magazine Catch 2 items
- Magazine Extension 6 items
- Magazine Release 19 items
- Magwell 34 items
- Optic Plate 4 items
- Parts Kit 4 items
- Pistol Accessory 9 items
- Pistol Frame 5 items
- Pistol Part 26 items
- Pistol Sights 9 items
- Rear Sight 1 item
- Recoil Spring 32 items
- Safety Selector 1 item
- Sight Post 2 items
- Slide Parts Kit 5 items
- Slide Plate 7 items
- Spring 6 items
- Take Down / Pivot Pins 1 item
- Thumb Rest 5 items
- Trigger 33 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.
