AR15A4 Bolt Assembly
Click to see full view
Colt
Overview
The Colt AR15A4 Bolt Assembly is a bolt carrier group. Compare prices from multiple merchants and find the best deal.
Specifications
Build history on GunPartPicker
Builders on GunPartPicker first added the Colt AR15A4 Bolt Assembly to a build in May 2026.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, but today the one retailer we track is out of stock. Prices barely moved in August 2026, holding around $118.99, so there haven't been real sales lately. Listed prices start at $118.99 at Brownells for when it comes back.
Trending bolt carrier groups →
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
Not sure which bolt carrier group to pick?
We ranked every bolt carrier group by how often it shows up in real builds on GunPartPicker.
Read the guide: The Most Trusted AR-15 BCGs →Check it against the live catalog:
Frequently Built With
Popular alongside bolt carrier groups on GunPartPicker
Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers
Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4
Wilson Combat AR-15 Lower Receiver Forged
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger
Magpul AFG-2 Angled Fore Grip - Black
Magpul AR-15 MOE Stock Collapsible Mil-Spec Black
No reviews yet. Be the first to review this product!