Rainier Arms
Rainier Arms Precision Match Grade BCG (5.56) - Phosphate
$169.95
Current stock:
NOW HP TESTED!
The Rainier Arms Precision Match Grade Phosphate BCG - 5.56 is machined and finished to a higher standard to meet and exceed all Mil Spec. It is machined using the most precise equipment in the industry. The bolts are MPI/HP tested & Marked to give you ultimate confidence in your weapon system.
Carrier:
- Full Auto Carrier
- SAE 8620
- Heat Treated
Bolt:
- 5.56/.223
- Carpenter 158 Steel
- Shot Peened
- Heat Treated
Extractor:
- Machined from bar
- Shot Peened
- Heat Treated
- Maganese Phosphate
Extractor Spring:
- Chrome Silicone for Longer Life
- Black Insert as per current Mil-Spec
- "O" Ring is high temp resistant dark brown
Extractor Retaining Pin:
- Precision Machined
- Precision ground to diameter
- Precision ground to length
- Heat Treated
Firing Pin:
- Machined and then precision ground for accuracy
- Heat Treated
Gas Key Bolt:
- Precision manufactured in house with extra deep knurling
- Grade 8
- 1200 degree locking patch is factory applied to threads to help insure long lasting tightness
Gas key:
- Hard Chrome lined gas tube as per Mil-Spec
- Bolts installed to proper torque
- Staking on both sides of both bolts
Cam Pin:
- Precision machined
- Heat Treated
Firing Pin Retaining Pin:
- Precision bent
- Precision cut to length
- Heat Treated
Gas Rings:
- Stainless Steel per Mil-Spec
Ejector:
- Precision machined
- Heat Treated
Ejector Spring:
- Chrome Silicone
- Precision ground ends
Ejector Retaining Pin:
- Precision cut to length
- Hard Chrome Plated