Home > Upper Receiver Groups AR15 : LMT, BCM, Stag Arms > BCM® Upper Receiver Groups with KMR (KeyMod™) Handguards > BCM® Upper Receiver Groups with KMR *ALPHA* (KeyMod™) Handguards >

  BCM SS410 18" Rifle Upper Receiver Group w/ BCM KMR-*ALPHA* 15" Handguard 1/8 Twist

BCM SS410 18" Rifle Upper Receiver Group w/ BCM KMR-*ALPHA* 15" Handguard 1/8 Twist
BCM SS410 18" Rifle Upper Receiver Group w/ BCM KMR-*ALPHA* 15" Handguard 1/8 Twist


 
Alternative Views:


List Price: $854.95
Our Price: $684.95
You save $170.00!


Stock Status:In Stock
Product Code: BCM-URG-18-SS410-KMR-A-15

Add BCM® Bolt Carrier Group with Upper Group

Add BCM® Bolt Carrier Group?*:
   The one and only BCM® milspec Bolt Carrier Group!
Charging Handle Options

  
Muzzle Device

  

Qty:  
Description
 



BCM® Presents the KMR *ALPHA*

All of the same unique features and advantages of the widely favored BCM® KMR Handguard, now offered in 100% Aluminum


All KMR *ALPHA*Upper Receiver Groups Include:

· One 3” Picatinny Rail Section

· One BCM® KeyMod™ Sling Mount

· Laser “T” Markings on Top Rail

· Laser Engraved Logo


Bravo Company MFG, Inc.
PLEASE NOTE: These batches will sell out quickly.
If the Stock Status is Out of Stock and you would like to get notification when more product arrives, please click the "Email me when Back-In-Stock" link under the Add To Cart button. You will get immediate notification of all new arrivals of product.
If you get an email notification and you check back again with our website to see that the product has already again sold out, please click the link again and add your email to the notification list.
Please check back with our website often. Sorry but we cannot take pre-orders or backorders on these products.
Professional Grade Weaponry, by BCM®
Made by Bravo Company MFG, Inc. (BCM) These Barreled Upper Receiver Groups are designed for shooting professionals with the Mil-Spec features for the demands of their duty. They are fully assembled, headspaced, and test fired.
As a note: BCM barrel components are parkerized separately before assembly. Prior to shipping, all BCM upper receiver groups are test fired for function, laser bore sighted with a Milspec carry handle for sight alignment within Mil-Specs, and then batch samples are test fired for accuracy. As such, the upper receiver group will show handling marks consistent with these quality control procedures.
M4 Feed Ramp Barrel Extension
M4 Feed Ramp Flat Top Receiver
In developing the USGI M4 carbine as one of the primary weapons for today’s infantry, some modifications were performed to the original M16 platform to enhance the reliability of the shorter barreled carbines. With the shorter carbine gas system and the increased gas port pressure, the carbine cycled faster, and at times the cycle rate could be faster than the magazine would feed ammunition. One of the modifications done to increase reliable feeding included enhancing the angle and the length of the feed ramps. This USGI modification was done to both the barrel extension and the upper receiver, creating a longer and steeper feed ramp. These Mil-Spec M4 feed ramps are part of the original CNC manufacturing process. As a result, the factory machined M4 feed ramps on the receiver are hard coat anodized which adds significant strength to the aluminum. This feature is offered on all BCM uppers and all BCM barrels.
T-Marked Upper Receiver
The contemporary M16/M4 rifle is built around the concept of modularity. All of the BCM flat top uppers feature a USGI type laser etched T-marks to provide addressing for the remounting of tactical accessories such as optics, laser sights, etc. This enables the weapon platform to be easily configured and then accurately reconfigured for each specific mission.
USGI 1/8 Twist Rate
The USGI 1/8 twist rate of all BCM Stainless barrels is the preferred twist rate by the DoD and most professional infantryman. This twist rate has proven very versatile and can effectively run the new heavier 5.56 ammo that is hugely popular with military and private security personal for its’ superior ballistics.
Mil-Spec SS410 Barrel Steel
this 18" BCM barrel is machined from SS410 stainless steel. Featuring hand lapped 1/8 twist rate button rifling and M4 feed ramps barrel extensions, the 410 stainless barrel gives the shooter the best balance of weight and accuracy. 410 stainless is also harder and more corrosion resistant than conventional 416 stainless found in other precision barrels
5.56 NATO Chambers
The USGI 5.56 NATO chamber is the best choice for effective deployment, reliability, and compatibility, of higher chamber pressures of military ammo.
Government Barrel Profiles
Duty rifles are built to be carried - day in and day out. The USGI barrel profiles (often referred to as the Government Profile) enable the operator to carry their weapon for longer periods of time and deploy them faster than the heavier commercial H-Barrel counterparts. The government profile barrel is also compatible with the current M203 mounting systems.
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.
Copyright © 2010-2014 Bravo Company MFG, Inc.
Untitled
Features
  • M4 Feed Ramp Barrel Extension (USGI)

    M4 Feed Ramp Flat Top Receiver

    T-Marked Upper Receivers

    1/8 Twist Rates

    5.56 NATO Chamber (USMC SAM-R)

    410 Stainless Steel

    HPT (High Pressure Test) Barrels

    MPI (Magnetic Particle Inspected) Barrels


Average Customer Review: 5 of 5 Total Reviews: 48 Write a review.

  0 of 0 people found the following review helpful:
 
Quality all around, very satisfied October 14, 2016
Reviewer: NICHOLAS HOOKER from DOBSON, NC United States  
The fit and finish of all items was amazing quality. Bravo company takes great pride in what they do and have quality materials and components which show in the products. I purchased this upper with the compensator and bolt carrier group. All are great and function superbly. This complete upper on my rifle groups 55gr great for an 18 inch barrel. Most shooters recommend 62 grain to 77 grain for an 18 inch white 1 in 8 twist but 55 shoots great too. This rifle build is for 3 gun competition and I am very satisfied with it. Thanks Bravo Company for the great products and the extra swag included with my order such as the hat, key chain, posters, etc.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
Excellent product October 14, 2016
Reviewer: Manuel Porro Vizcarra from San Juan, PR United States  
I ordered the BCM SS410 18" Rifle Upper Receiver Group w/ BCM KMR-*ALPHA* 15" Handguard 1/8 Twist 1 with BC bolt carrier group, to place it on an AERO precision lower. The fit and finish of this BC upper is superb.   I have just shot my first 100 on the rifle without any hiccup, as it is expected from one of the premier AR builders.  Thanks Bravo. Keep up the good work

Was this review helpful to you?

  1 of 1 people found the following review helpful:
 
Great Competition Upper September 22, 2016
Reviewer: Kevin R from Beverly Hills, CA United States  
Have 537 rounds through it from one range trip and one rifle competition. Pros: Accuracy, thin rail, price, and soft shooting. This upper with a M4-72 comp is noticeably softer shooting than a Spikes 16" mid-length gas with a SJC Titan comp. Cons: Aluminum rail heats up quickly and retains that heat, weight. Can make a lightweight build feel a tad barrel heavy. Pleased with purchase but would like to see an enhanced lightweight version if possible.

Was this review helpful to you?

  1 of 1 people found the following review helpful:
 
Exceptional Product! September 22, 2016
Reviewer: Michael F from Blooming Grove, TX United States  
Purchased one of the BCM SS410 18" uppers and couldn't be happier. As soon as you pull it out of the box you can see, and feel, the quality of work. The KMR hand guard fits in my hand perfectly, unlike some of the other bulkier hand guards and the accuracy out of the box is exceptional. I broke the barrel in by using the shoot 2 clean, shoot 3 clean, shoot 5 clean method while also zeroing in at 50 yards. After break in  I stacked 2 consecutive shots on top of each other at 50 yards and moved out to 200 yards where I was shooting MOA groups with XM193 ball ammo and a Vortex 1x4 PST. I have no doubt that this upper will be able to stack up sub MOA groups with match grade ammo.

Great product BCM, I will definitely continue to buy.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
 
First AR build BCM great choice September 22, 2016
Reviewer: Russell Schreiner from Gulf Breeze, FL United States  
This is my first AR build. A friend that is a LEO suggested BCM.  Upper showed up on time.  Looks great and shoots great.  


Was this review helpful to you?

View All Customer Reviews

Browse for more products in the same category as this item:

Upper Receiver Groups AR15 : LMT, BCM, Stag Arms > BCM® Upper Receiver Groups with KMR (KeyMod™) Handguards > BCM® Upper Receiver Groups with KMR *ALPHA* (KeyMod™) Handguards
Upper Receiver Groups AR15 : LMT, BCM, Stag Arms
Upper Receiver Groups AR15 : LMT, BCM, Stag Arms > BCM® Upper Receiver Groups
Upper Receiver Groups AR15 : LMT, BCM, Stag Arms > BCM® Upper Receiver Groups > BCM Upper Receiver Groups with SS410™ Barrels
NEW** Products - Just In
Upper Receiver Groups AR15 : LMT, BCM, Stag Arms > 18" Rifle Upper Group
Upper Receiver Groups AR15 : LMT, BCM, Stag Arms > BCM® Upper Receiver Groups with KMR (KeyMod™) Handguards