A glamour shot of three AR-15 Bolt Carrier Groups from AIM Surplus. We have a few projects and upgrades coming up, so these BCGs will soon have homes. Stay tuned for updates!
The AR-15 shown in the above image is a Windham Weaponry SRC, equipped with an Aimpoint Micro T-2 red dot sight.
Bolt Carrier Groups Shown Include (from top):
AIM AR/M16 .223/5.56 NiB 9310 MPI Bolt Carrier Group
- SKU: XAIMBCGNIBBDG
- Carrier
- M16 style (Auto)
- Machined from 8620 tool steel
- Heat treated to military specifications
- Bolt
- Machined from 9310 tool steel
- Heat treated to military specifications
- Shot Peened
- Ground to meet military required tolerances
- MPI (Mag Particle Inspected)
- Gas Key
- Machined from 4140
- Heat treated to military specifications
- Extractor
- Machined from 4140
- Heat treated to military specifications
- Shot peened
- Firing Pin
- Machined from 8640 tool steel
- Heat treated to military specifications
- Ground to meet military required tolerances
- Coated with .0002”-.0003” of hard chrome per MIL-STD-171 1.2.2.2
- Cam Pin
- Machined from 4340
- Quench and temper heat treat
- Ground to meet military required tolerances
- More Info: AIM Surplus
AIM AR/M16 .223/5.56 Nitride 9310 MPI Bolt Carrier Group
- SKU: XAIMBCGN3BDG
- Carrier
- M16 style (Auto)
- Machined from 8620 tool steel
- Heat treated to military specifications
- Bolt
- Machined from 9310 tool steel
- Heat treated to military specifications
- Shot Peened
- Ground to meet military required tolerances
- MPI (Mag Particle Inspected)
- Gas Key
- Machined from 4140
- Heat treated to military specifications
- Extractor
- Machined from 4140
- Heat treated to military specifications
- Shot peened
- Firing Pin
- Machined from 8640 tool steel
- Heat treated to military specifications
- Ground to meet military required tolerances
- Coated with .0002”-.0003” of hard chrome per MIL-STD-171 1.2.2.2
- Cam Pin
- Machined from 4340
- Quench and temper heat treat
- Ground to meet military required tolerances
- More Info: AIM Surplus
AIM AR/M16 H4 .223/5.56/.300 BLACKOUT 9310 MPI Bolt Carrier Group
- SKU: XAIMBCGH4
- Carrier
- UCT EXO COATED
- M16 style (Auto)
- Machined from 8620 tool steel
- Heat treated to military specifications
- Bolt
- BLACKNITRIDE Finish
- Machined from 9310 tool steel
- Heat treated to military specifications
- Shot Peened
- Ground to meet military required tolerances
- MPI (Mag Particle Inspected)
- Gas Key
- UCT EXO COATED
- Machined BILLET 4140
- Heat treated to military specifications
- Extractor
- BLACKNITRIDE Finish
- Machined from 4140
- Heat treated to military specifications
- Shot peened
- Firing Pin
- Machined from 8640 tool steel
- Heat treated to military specifications
- Ground to meet military required tolerances
- Coated with .0002”-.0003” of hard chrome per MIL-STD-171 1.2.2.2
- Cam Pin
- BLACKNITRIDE Finish
- Machined from 4340
- Quench and temper heat treat
- Ground to meet military required tolerances
- More Info: AIM Surplus