HPT / MP Inspected Barrels
Military specifications require that barrels undergo a HPT (High-Pressure Test) load as a part of quality assurance procedures. Commonly referred to as a proof load, the M197 HPT is rated for 70,000 psi. BCM barrels are proof loaded and then MPI (Magnetic Particle Inspected) to detect any possible flaws in the barrels surface. The barrels are MP inspected with both circular and longitudinal magnetic fields per ASTME1444-01 (current Mil-Spec) to assure a high quality finished product. All BCM barrels are marked HP MP as our proof load marking.
Black Mod 2 Stock
Black Mod 4 Pistol Grip
BCM4 Lower Receiver
PNT Trigger
Ambi MK2 Charging Handle - Large Latch
RMS M1T0 System for
- Lessens felt recoil, without compromising reliability
- Provides a more consistent carrier velocity, which can aid in accuracy, reliability over conventional carbine buffer system
- Increased internal counterweight travel reduces bolt bounce
- Internal spring to reduce noise of counter weight shifting and ensure more consistent weight placement
- Mil-Spec M16A4 rifle spring with more spring coils than M4 carbine, increases consistency and widens operating envelope
- Buffer made of 7075T6 aluminum, hard coat anodized for lasting endurance. Comprised of Mil-Spec components
(PLEASE NOTE: because of the MK2’s longer length some Mil-Spec stocks may not completely collapse closed all the way up to the M4 Lock nut.)
All outgoing orders are subject to $40 transfer fee additional to the cost of product. Email FFL@toppackdefense.com or call (608) 318-5238 for purchase and for FFL transfer shipping location.