AR-10 Build Planner: Parts, Fit and Prices
.308 Win / 6.5 Creedmoor. Pick DPMS or Armalite pattern first; most parts follow from it. 72 parts from 27 brands, each checked for fit against the rest of your build, with prices compared across retailers.
Open the AR-10 BuilderStart from a Complete Build
Three AR-10 builds where every part already fits, from $857.77. Open one in the builder and swap anything you like.
What's in the Budget AR-10
- Stripped Lower Receiver: Palmetto State Armory PA-10 Stripped Lower $99.99
- Lower Parts Kit: Aero Precision AR-10/M5 Lower Parts Kit, Minus FCG/Grip $47.99
- Trigger Group: Palmetto State Armory EPT Enhanced Polished Trigger $39.99
- Buffer System: Palmetto State Armory PA-10 Carbine Buffer Kit $49.99
- Stock: Palmetto State Armory Classic M4 Stock $19.99
- Pistol Grip: Magpul MOE Grip $19.95
- Stripped Upper Receiver: Palmetto State Armory PA-10 Stripped Upper $89.99
- Barrel: Palmetto State Armory 18" .308 Win Midlength, Nitride $179.99
- Gas Block: Aero Precision Low Profile Gas Block .750 $22.99
- Gas Tube: Aero Precision AR-10 Midlength Gas Tube $11.99
- Handguard: Palmetto State Armory PA-10 15" M-LOK Rail $79.99
- Bolt Carrier Group: Palmetto State Armory PA-10 .308 Nitride BCG $129.99
- Charging Handle: Aero Precision AR-10/M5 Charging Handle $24.99
- Muzzle Device: Generic A2 Flash Hider .308 (5/8x24) $14.99
- Magazine: Magpul PMAG 20 LR/SR Gen M3 $24.95
What's in the Best Value AR-10
- Stripped Lower Receiver: Aero Precision M5 Stripped Lower $154.99
- Lower Parts Kit: Aero Precision AR-10/M5 Lower Parts Kit, Minus FCG/Grip $47.99
- Trigger Group: ALG Defense ACT Trigger $69.00
- Buffer System: Aero Precision AR-10 Carbine Buffer Kit $67.99
- Stock: Magpul MOE SL Carbine Stock $49.95
- Pistol Grip: Bravo Company Gunfighter Grip Mod 3 $19.95
- Stripped Upper Receiver: Aero Precision M5 Stripped Upper $134.99
- Barrel: Ballistic Advantage 18" .308 Win Rifle-Length Performance $259.99
- Gas Block: Aero Precision Low Profile Gas Block .750 $22.99
- Gas Tube: Aero Precision AR-10 Rifle-Length Gas Tube $14.99
- Handguard: Aero Precision ATLAS S-ONE 15" M-LOK, AR-10 $184.99
- Bolt Carrier Group: Toolcraft AR-10 .308 Nitride BCG $164.99
- Charging Handle: Radian Raptor .308 Ambi Charging Handle $99.95
- Muzzle Device: Precision Armament M4-72 Severe Duty Brake (5/8x24) $94.99
- Magazine: Magpul PMAG 20 LR/SR Gen M3 $24.95
- Optic: Vortex Strike Eagle 1-8x24 + Mount $349.99
What's in the Premium AR-10
- Stripped Lower Receiver: Seekins Precision SP10 Billet Lower $339.00
- Lower Parts Kit: Aero Precision AR-10/M5 Lower Parts Kit, Minus FCG/Grip $47.99
- Trigger Group: Geissele SSA-E Two Stage $189.99
- Buffer System: Aero Precision AR-10 Carbine Buffer Kit $67.99
- Stock: Magpul UBR Gen2 Collapsible Stock $239.95
- Pistol Grip: Bravo Company Gunfighter Grip Mod 3 $19.95
- Stripped Upper Receiver: Seekins Precision SP10 Billet Upper $289.00
- Barrel: Criterion 20" 6.5 Creedmoor Rifle-Length $329.00
- Gas Block: Superlative Arms Adjustable Bleed-Off Gas Block .875 $89.99
- Gas Tube: Aero Precision AR-10 Rifle-Length Gas Tube $14.99
- Handguard: Seekins Precision SP3R V3 15" Rail $235.00
- Bolt Carrier Group: JP Enterprises LMOS .308 Bolt Carrier $349.99
- Charging Handle: Radian Raptor .308 Ambi Charging Handle $99.95
- Muzzle Device: Precision Armament M4-72 Severe Duty Brake (5/8x24) $94.99
- Magazine: Magpul PMAG 20 LR/SR Gen M3 $24.95
- Optic: Vortex Venom 5-25x56 FFP + Mount $639.99
AR-10 Parts and Prices
Every AR-10 part we list, cheapest first, with the lowest price we found (prices last checked Oct 5, 2026). The builder checks how each one fits with the rest of your parts.
Stripped Lower Receiver
4 options, $99.99 to $339.00. Serialized. DPMS or Armalite pattern decides the rest of the build.
| Palmetto State Armory PA-10 Stripped Lower Budget PickDPMS low-profile pattern | $99.99 at Palmetto State Armory (sample price) |
|---|---|
| Aero Precision M5 Stripped Lower Best ValueDPMS high-profile pattern · Threaded bolt catch pin | $154.99 at Primary Arms (sample price) |
| Armalite AR-10 Stripped LowerArmalite pattern | $229.99 at Brownells (sample price) |
| Seekins Precision SP10 Billet Lower Premium PickDPMS high-profile pattern · Billet · Ambi bolt release | $339.00 at OpticsPlanet (sample price) |
Lower Parts Kit
2 options, $47.99 to $79.99. Pattern-specific: DPMS and Armalite parts kits differ.
| Aero Precision AR-10/M5 Lower Parts Kit, Minus FCG/Grip Best ValueDPMS pattern | $47.99 at Primary Arms (sample price) |
|---|---|
| Armalite AR-10 Lower Parts KitArmalite pattern | $79.99 at Brownells (sample price) |
Trigger Group
4 options, $39.99 to $189.99. AR-15 small-pin triggers fit both patterns.
| Palmetto State Armory EPT Enhanced Polished Trigger Budget PickSingle stage · ~6 lb · Polished | $39.99 at Palmetto State Armory (sample price) |
|---|---|
| ALG Defense ACT Trigger Best ValueSingle stage · ~5.5 lb | $69.00 at Brownells (sample price) |
| LaRue Tactical MBT-2S Two StageTwo stage · ~4.5 lb total | $99.95 at OpticsPlanet (sample price) |
| Geissele SSA-E Two Stage Premium PickTwo stage · 3.5 lb total | $189.99 at Primary Arms (checked Oct 5, 2026) |
Buffer System
2 options, $49.99 to $67.99. Use a .308 buffer and spring for reliable cycling.
| Palmetto State Armory PA-10 Carbine Buffer Kit Budget PickCarbine tube · .308 buffer | $49.99 at Palmetto State Armory (sample price) |
|---|---|
| Aero Precision AR-10 Carbine Buffer Kit Best ValueCarbine tube · .308 buffer + spring | $67.99 at Primary Arms (sample price) |
Stock
4 options, $19.99 to $239.95. AR-15 stocks fit AR-10 buffer tubes.
| Palmetto State Armory Classic M4 Stock Budget PickCollapsible | $19.99 at Palmetto State Armory (sample price) |
|---|---|
| Magpul MOE SL Carbine Stock Best ValueCollapsible · QD socket | $49.95 at Primary Arms (sample price) |
| Magpul CTR Carbine StockCollapsible · Friction lock · QD socket | $69.95 at Primary Arms (sample price) |
| Magpul UBR Gen2 Collapsible Stock Premium PickCollapsible · Adjustable cheek · QD sockets | $239.95 at Primary Arms (sample price) |
Pistol Grip
2 options, $19.95. Any AR-15 grip fits.
| Magpul MOE Grip Budget PickPolymer | $19.95 at Primary Arms (sample price) |
|---|---|
| Bravo Company Gunfighter Grip Mod 3 Best ValueSteeper angle | $19.95 at Brownells (sample price) |
Stripped Upper Receiver
4 options, $89.99 to $289.00. Must match the lower's pattern. DPMS uppers are high or low profile.
| Palmetto State Armory PA-10 Stripped Upper Budget PickDPMS low-profile pattern | $89.99 at Palmetto State Armory (sample price) |
|---|---|
| Aero Precision M5 Stripped Upper Best ValueDPMS high-profile pattern · Forward assist | $134.99 at Primary Arms (sample price) |
| Armalite AR-10 Stripped UpperArmalite pattern | $179.99 at Brownells (sample price) |
| Seekins Precision SP10 Billet Upper Premium PickDPMS high-profile pattern · Billet | $289.00 at OpticsPlanet (sample price) |
Barrel
5 options, $179.99 to $329.00. Sets caliber, gas length, journal and muzzle threads (usually 5/8x24).
| Palmetto State Armory 18" .308 Win Midlength, Nitride Budget Pick18" · .308 Win · Midlength gas · .750 journal · 5/8x24 | $179.99 at Palmetto State Armory (sample price) |
|---|---|
| Ballistic Advantage 20" .308 Win Heavy Rifle-Length, Modern Series20" · .308 Win · Rifle gas · .750 journal · 1:10 · Heavy profile · 5/8x24 | $199.99 at Primary Arms (sample price) |
| Aero Precision 16" .308 Win Midlength16" · .308 Win · Midlength gas · .750 journal · 5/8x24 | $224.99 at Primary Arms (sample price) |
| Ballistic Advantage 18" .308 Win Rifle-Length Performance Best Value18" · .308 Win · Rifle gas · .750 journal · 5/8x24 | $259.99 at Primary Arms (sample price) |
| Criterion 20" 6.5 Creedmoor Rifle-Length Premium Pick20" · 6.5 Creedmoor · Rifle gas · .875 journal · 5/8x24 | $329.00 at Brownells (sample price) |
Gas Block
3 options, $22.99 to $89.99. Must match the barrel journal diameter.
| Aero Precision Low Profile Gas Block .750 Best Value.750 · Low profile | $22.99 at Primary Arms (sample price) |
|---|---|
| Superlative Arms Adjustable Bleed-Off Gas Block .750.750 · Adjustable | $84.99 at Brownells (sample price) |
| Superlative Arms Adjustable Bleed-Off Gas Block .875 Premium Pick.875 · Adjustable | $89.99 at Brownells (sample price) |
Gas Tube
2 options, $11.99 to $14.99. Must match the barrel gas system length.
| Aero Precision AR-10 Midlength Gas TubeMidlength | $11.99 at Palmetto State Armory (sample price) |
|---|---|
| Aero Precision AR-10 Rifle-Length Gas TubeRifle length | $14.99 at Aero Precision (sample price) |
Handguard
4 options, $79.99 to $235.00. Must match the upper's barrel nut thread (DPMS or Armalite).
| Palmetto State Armory PA-10 15" M-LOK Rail Budget Pick15" · DPMS low-profile · M-LOK | $79.99 at Palmetto State Armory (sample price) |
|---|---|
| Aero Precision ATLAS S-ONE 15" M-LOK, AR-10 Best Value15" · DPMS high-profile · M-LOK | $184.99 at Primary Arms (sample price) |
| Armalite AR-10 Tactical 15" Handguard15" · Armalite pattern | $199.99 at Brownells (sample price) |
| Seekins Precision SP3R V3 15" Rail Premium Pick15" · DPMS high-profile · M-LOK | $235.00 at OpticsPlanet (sample price) |
Bolt Carrier Group
4 options, $129.99 to $349.99. DPMS and Armalite bolt carriers differ. 6.5 CM uses the .308 bolt face.
| Palmetto State Armory PA-10 .308 Nitride BCG Budget Pick.308 / 6.5 CM · Nitride | $129.99 at Palmetto State Armory (sample price) |
|---|---|
| Toolcraft AR-10 .308 Nitride BCG Best Value.308 / 6.5 CM · Nitride · MPI | $164.99 at Primary Arms (sample price) |
| Young Manufacturing AR-10 Armalite Black Nitride BCGArmalite pattern · .308 / 6.5 CM · Nitride | $199.95 at Young Manufacturing (checked Oct 5, 2026) |
| JP Enterprises LMOS .308 Bolt Carrier Premium Pick.308 / 6.5 CM · Low-mass · Enhanced bolt | $349.99 at Brownells (sample price) |
Charging Handle
3 options, $24.99 to $99.95. DPMS and Armalite charging handles differ.
| Aero Precision AR-10/M5 Charging Handle Budget PickDPMS pattern | $24.99 at Palmetto State Armory (sample price) |
|---|---|
| Armalite AR-10 Charging HandleArmalite pattern | $49.99 at Brownells (sample price) |
| Radian Raptor .308 Ambi Charging Handle Best ValueDPMS pattern · Ambidextrous | $99.95 at Brownells (sample price) |
Muzzle Device
4 options, $9.99 to $169.00. Most .308 barrels are threaded 5/8x24.
| Generic A2 Birdcage 5.56 (1/2x28)1/2x28 · Flash hider | $9.99 at Palmetto State Armory (sample price) |
|---|---|
| Generic A2 Flash Hider .308 (5/8x24) Budget Pick5/8x24 · Flash hider | $14.99 at Palmetto State Armory (sample price) |
| Precision Armament M4-72 Severe Duty Brake (5/8x24) Best Value5/8x24 · Brake | $94.99 at Brownells (sample price) |
| SureFire SOCOM 3-Prong Flash Hider 7.62 (5/8x24)5/8x24 · Flash hider · Suppressor mount | $169.00 at Primary Arms (sample price) |
Magazine
2 options, $24.95 to $39.99. SR-25 pattern (Magpul PMAG LR/SR) mags fit DPMS and current Armalite A-series lowers.
| Magpul PMAG 20 LR/SR Gen M3 Best Value20 rd · SR-25 pattern · DPMS and Armalite | $24.95 at Primary Arms (sample price) |
|---|---|
| Armalite AR-10 20-Round Magazine20 rd · SR-25 pattern · Armalite A-series | $39.99 at Brownells (sample price) |
Optic
3 options, $349.99 to $639.99. Prices include a mount where noted.
| Vortex Strike Eagle 1-8x24 + Mount Best ValueLPVO · 1-8x | $349.99 at Primary Arms (sample price) |
|---|---|
| Primary Arms SLx 1-6x24 SFP Gen IV + MountLPVO · 1-6x · Mount included | $399.98 at Primary Arms (checked Oct 5, 2026) |
| Vortex Venom 5-25x56 FFP + Mount Premium PickPrecision scope · FFP | $639.99 at OpticsPlanet (sample price) |
Weapon Light
3 options, $119.99 to $399.00. Mounts to M-LOK directly or to a Picatinny rail section. Pick the side and drag it along the rail.
| Streamlight ProTac Rail Mount HL-X1,000 lm · Picatinny clamp · M-LOK mount included | $119.99 at Primary Arms (sample price) |
|---|---|
| Cloud Defensive REIN MicroM-LOK inline mount · High candela | $369.99 at Brownells (sample price) |
| SureFire M600DF Scout Light1,500 lm · Picatinny (M75 thumbscrew) | $399.00 at Brownells (sample price) |
Laser
2 options, $299.99 to $317.99. Most lasers clamp to Picatinny; add a rail section on an M-LOK handguard. Pick the side and drag it along the rail.
| Holosun LS117G Green LaserGreen laser · QD Picatinny mount · Class IIIa | $299.99 at OpticsPlanet (sample price) |
|---|---|
| Crimson Trace CMR-301 Rail Master ProLight + green laser · Picatinny and M-LOK mounts · Class 3R | $317.99 at Brownells (sample price) |
Foregrip
5 options, $19.95 to $39.95. Vertical grip, angled grip or hand stop on the bottom of the handguard. Drag it along the rail on the drawing.
| Magpul M-LOK Hand Stop KitHand stop · M-LOK | $19.95 at Magpul (sample price) |
|---|---|
| Magpul MVG M-LOK Vertical GripVertical · M-LOK | $21.95 at Magpul (sample price) |
| Bravo Company Gunfighter Vertical Grip Mod 3, M-LOKShort vertical · M-LOK | $29.95 at Brownells (sample price) |
| Bravo Company Gunfighter Kinesthetic Angled Grip, M-LOKAngled · M-LOK | $29.95 at Brownells (sample price) |
| Magpul AFG-2 Angled Fore GripAngled · Picatinny | $39.95 at Magpul (sample price) |
Magnifier
2 options, $199.99 to $279.99. Sits behind a 1x red dot at the same height. Not for scopes or LPVOs.
| Holosun HM3X 3x Magnifier3x · Flip-to-side QD mount · Absolute or lower 1/3 (spacer) | $199.99 at Primary Arms (checked Oct 5, 2026) |
|---|---|
| Vortex VMX-3T Magnifier3x · Flip mount · Absolute or lower 1/3 (shim) | $279.99 at Primary Arms (sample price) |
Rail Section
2 options, $11.95 to $15.95. Adds a Picatinny rail to an M-LOK handguard.
Sling Mount
1 option, $20.95. Adds a QD sling socket to an M-LOK handguard.
| Magpul M-LOK QD Sling MountQD socket · One M-LOK slot | $20.95 at Magpul (checked Oct 5, 2026) |
|---|
Sling
1 option, $79.95. QD slings need a QD socket at the front and the stock.
| Magpul MS4 Dual QD Sling Gen21 or 2 point · Two QD swivels included | $79.95 at Magpul (checked Oct 5, 2026) |
|---|
Case
4 options, $87.97 to $209.95. Pick a case at least 2" longer than the rifle.
| Savior Equipment American Classic Double Rifle Case, 36"Soft · 35" interior · Two rifles | $87.97 at Brownells (sample price) |
|---|---|
| Savior Equipment American Classic Double Rifle Case, 42"Soft · 41" interior · Two rifles | $92.97 at Brownells (sample price) |
| Pelican Vault V700 Takedown CaseHard · 36.5" interior | $169.95 at OpticsPlanet (sample price) |
| Pelican Vault V730 Tactical Rifle CaseHard · 44" interior | $209.95 at OpticsPlanet (sample price) |