AR-15 Parts Manufacturer — BCG, Uppers, Lowers & More
High-volume CNC machining of AR-15 bolt carrier groups, upper receivers, lower receivers, and complete component sets. Mil-spec materials and tolerances.
AR-15 Parts Manufacturing Machining
TXSwiss is a leading AR-15 parts manufacturer specializing in high-volume CNC production of bolt carrier groups (BCGs), upper receivers, lower receivers, and precision internal components. We produce AR-15 parts for firearms OEMs and private label brands at scale — from 1,000-piece prototype runs to million-unit production programs. Every part is machined from mil-spec materials on Swiss CNC equipment with tolerances to ±0.0001" and 100% material traceability.
AR-15 components demand a manufacturer who understands the platform inside and out. TXSwiss machines BCGs from Carpenter 158 and 9310 steel, carriers from 8620 steel, and receivers from 7075-T6 aluminum — the exact mil-spec materials the AR-15 platform requires. Our Swiss CNC equipment excels at the turned components that make up the BCG, fire control group, and buffer assembly, while our production capacity supports the high volumes that AR-15 market demand requires.
AR-15 Parts Manufacturing Components
Materials We Machine for AR-15 Parts Manufacturing
Carpenter 158 Steel (Bolts)
Mil-spec AR-15/M16 bolt steel. Heat treated 26-32 HRC. Shot peened. MPI tested per mil-spec requirements
9310 Steel (Premium Bolts)
Enhanced bolt steel with superior fatigue strength and toughness. Preferred for high-round-count and full-auto applications
8620 Steel (Bolt Carriers)
Mil-spec carrier steel. Case hardened for surface wear resistance with a ductile, shock-absorbing core
7075-T6 Aluminum (Receivers)
Mil-spec forged and billet receiver aluminum. Type III hard coat anodized per MIL-A-8625
4150 CMV Steel (Barrels)
Chrome moly vanadium barrel steel. Chrome-lined or Nitride/QPQ treated for corrosion resistance and barrel life
S7 Tool Steel (Fire Control)
Premium trigger and hammer steel — extreme impact toughness for reliable fire control components
4140 Steel (Gas Blocks, Barrel Extensions)
Standard gas system and barrel extension steel. Heat-treatable to required hardness specifications
17-4 PH Stainless (Adjustable Gas Blocks)
Precipitation-hardened stainless for adjustable gas blocks requiring corrosion resistance and strength
How We Machine
Have a AR-15 Parts Manufacturing program in mind?
Send us your TDP, drawings, materials, and target volumes — we'll come back with a quote.
Quality Standards
Mil-spec TDP conformance for M16/M4 components
Carpenter 158 & 9310 bolt heat treatment to 26-32 HRC
Magnetic Particle Inspection (MPI) for bolt qualification
Headspace verification — GO, NO-GO, and FIELD gauge checking
MIL-A-8625 Type III hard coat anodizing coordination
MIL-DTL-13924 phosphate coating coordination
Nitride/Melonite QPQ surface treatment coordination
Full material traceability — heat lot through final inspection
Statistical Process Control (SPC) across production runs
CMM dimensional verification of critical features
AR-15 Parts Manufacturing FAQ
Do you produce complete BCGs or individual components?
Both. We machine bolts, carriers, gas keys, cam pins, firing pins, and extractors as individual components, and we offer complete BCG assembly with gas key staking, MPI, and headspace verification on request.
Are your bolts MPI tested and shot peened to mil-spec?
Yes. Bolts produced from Carpenter 158 or 9310 steel are heat treated to 26-32 HRC, shot peened, and Magnetic Particle Inspected per mil-spec requirements. Documentation ships with every lot.
Can you machine billet receivers from customer designs?
Yes. We machine custom billet upper and lower receivers from 7075-T6 aluminum to your Technical Data Package or design files. Type III hard coat anodizing per MIL-A-8625 is coordinated through our finishing partners.
What is your minimum order quantity for AR-15 components?
No firm minimum on prototype validation runs (typically 100-500 pieces for first-article qualification). Production programs typically start at 5,000-10,000 pieces per release with blanket orders welcomed for million-plus annual volumes.
Do you handle export control and ITAR registration on AR-15 work?
Yes. TXSwiss is ITAR-aware and registered with the U.S. State Department. We control access to controlled technical data per ITAR and EAR requirements. CAGE Code 81YN7 supports DoD and federal procurement.
Ready to Discuss Your AR-15 Parts Manufacturing Project?
Need a high-volume AR-15 parts manufacturer? Whether it's BCGs, receivers, or complete component sets — let's discuss your OEM program.