4.) H2 4.7oz + Extra Power Buffer Spring (Red)

Sprinco Extra Power Carbine Spring (Red) W/ BKF H2 Buffer (4.7oz)
(The option with the most spring tension, this spring is suited for rifles and carbines with excessive bolt speeds. This spring is suitable for 10.5″-16″ 5.56 Nato uppers with carbine length gas systems (which are typically over gassed), all suppressed rifles, piston operated rifles, and 9mm conversions.)

Showing all 43 results

BKF AR15 Pistol Complete Mil-Spec Lower Receiver – No Stock (Pistol Buffer Tube Only)
$150.89 UPC: 810124542726
26 in stock
BKF AR15 Complete Lower Receiver – Anodized (No Logo)
Rated 4.67 out of 5
$163.35 UPC: 810124542672
26 in stock
BKF AR15 Complete MOE Lower Receiver – No Stock (No Logo)
Rated 5.00 out of 5
$167.36 UPC: 810124542719
26 in stock
BKF AR15 Pistol Complete MOE Lower Receiver – No Stock (Pistol Buffer Tube Only)
$167.36 UPC: 810124542412
26 in stock
BKF M4 MOD-0 Standard Power Complete Lower Receiver – No Stock
Rated 4.88 out of 5
$198.20 UPC: 810124542887
26 in stock
BKF AR15 Complete Sopmod Lower Receiver – (No Logo)
Rated 5.00 out of 5
$202.78
26 in stock
BKF M4 MOD-0 Intermediate Power Complete Lower Receiver (H1) – No Stock
$206.60 UPC: 810124542924
26 in stock
BKF AR15 Complete MOE Lower Receiver – (No Logo)
$209.02 UPC: 810124542917
26 in stock
BKF AR15 Accent Kit Complete Lower Receiver – FDE Cerakote
$218.90
Out of stock
BKF AR15 Accent Kit Complete Lower Receiver – Sniper Grey Cerakote
$218.90
Out of stock
BKF AR15 Accent Kit Complete Lower Receiver – Gold Cerakote
$218.90
Out of stock
BKF AR15 Accent Kit Complete Lower Receiver – OD Green Cerakote
$218.90
Out of stock
BKF AR15 Accent Kit Complete Lower Receiver – Bazooka Green Cerakote
$218.90
16 in stock
BKF AR15 Accent Kit Complete Lower Receiver – Burnt Bronze Cerakote
$218.90
4 in stock
BKF AR15 Accent Kit Complete Lower Receiver – Orange Cerakote
$218.90
Out of stock
BKF AR15 Accent Kit Complete Lower Receiver – Midnight Bronze Cerakote
$218.90
8 in stock
BKF AR15 Accent Kit Complete Lower Receiver – Tungsten Cerakote
$218.90
Out of stock
BKF AR15 Accent Kit Complete Lower Receiver – Northern Lights Cerakote
$218.90
1 in stock
BKF AR15 Accent Kit Complete Lower Receiver – Robins Egg Blue Cerakote
$218.90
Out of stock
BKF AR15 Accent Kit Complete Lower Receiver – Purple Cerakote
$218.90
Out of stock
BKF AR15 Accent Kit Complete Lower Receiver – Zombie Green Cerakote
$218.90
Out of stock
BKF AR15 Accent Kit Complete Lower Receiver – Red Cerakote
$218.90
Out of stock
BKF AR15 Accent Kit Complete Lower Receiver – Pink Cerakote
$218.90
Out of stock
BKF AR15 Accent Kit Complete Lower Receiver – NRA Blue Cerakote
$218.90
Out of stock
BKF M4 MOD-0 Extra Power Complete Lower Receiver (H2) – No Stock
$233.39 UPC: 810124543068
10 in stock
BKF AR15 Complete SBA3 Lower Receiver – Anodized
$233.49
22 in stock
BKF M4 MOD-0 Standard Power Complete MOE Lower Receiver – Anodized
Rated 5.00 out of 5
$239.86
26 in stock
BKF M4 MOD-0 Intermediate Power Complete MOE Lower Receiver – Anodized
$248.26 UPC: 810124543136
26 in stock
BKF M4 MOD-0 Standard Power Complete SL Lower Receiver – Anodized
$258.40
26 in stock
BKF AR15 Complete MOE Rifle Lower Receiver – (No Logo)
$264.40 UPC: 810124543143
26 in stock
BKF M4 MOD-0 Standard Power Complete MOE Rifle Lower Receiver
$266.34
25 in stock
BKF M4 MOD-0 Intermediate Power Complete SL Lower Receiver – Anodized
$266.80 UPC: 810124543150
26 in stock
BKF M4 MOD-0 Standard Power Complete SL-S Lower Receiver – Anodized
$276.95 UPC: 810124543198
26 in stock
BKF M4 MOD-0 Standard Power Complete Lower Receiver W/ 4.5lb Two Stage Combat Control Kit – No Stock
Rated 5.00 out of 5
$283.03
25 in stock
BKF M4 MOD-0 Intermediate Power Complete SL-S Lower Receiver – Anodized
$285.35 UPC: 810124543204
26 in stock
BKF M4 MOD-0 Intermediate Power (H1) Complete Lower Receiver W/ 4.5lb Two Stage Combat Control Kit – No Stock
Rated 5.00 out of 5
$292.88
25 in stock
BKF M4 MOD-0 Extra Power (H2) Complete Lower Receiver W/ 4.5lb Two Stage Combat Control Kit – No Stock
$302.68
10 in stock
BKF M4 MOD-0 Standard Power Complete Moe Rifle Lower Receiver W/ 4.5lb Two Stage Combat Control Kit
$350.19
24 in stock
BKF M4 MOD-0 Standard Power Complete SL-S Lower Receiver W/ 4.5lb Two Stage Combat Control Kit
$361.78
25 in stock
BKF M4 MOD-0 Intermediate Power (H1) Complete SL-S Lower Receiver W/ 4.5lb Two Stage Combat Control Kit
$370.18
25 in stock
BKF M4 MOD-0 Extra Power (H2) Complete SL-S Lower Receiver W/ 4.5lb Two Stage Combat Control Kit
$381.43
10 in stock
BKF M4 MOD-0 Standard Power Complete PRS Lower Receiver – Anodized
$442.43 UPC: 810124543501
25 in stock
BKF M4 MOD-0 Standard Power Complete PRS Rifle Lower Receiver W/ 4.5lb Two Stage Combat Control Kit
$526.28
24 in stock

Important notice

Notice - Ammunition.
Ammunition is restricted from sale to CT, IL, MA, NJ, NY, RI, New Orleans, LA, and Washington DC. You must be 18 or older to purchase ammunition, and 21 or older to purchase handgun ammunition. You must be 21 or older to purchase ammunition in DE. For safety reasons, we do not accept returns on ammunition.
All ammunition is considered hazardous and will be shipped ground, contiguous 48 states only. A street address is required for delivery.

Notice - Hazardous Material.
Hazardous Material. Must ship ground only. Not eligible for expedited shipping. Contiguous 48 states only. A physical address is required for delivery.

Notice - Ammo Returns.
For safety reasons we do not accept returns on ammunition, black powder, primers, reloading lead and brass or bullets.

Privacy Policy:

B .King's Firearms, Training and Retail LLC is a registered business in state of Ohio. What follows is the online privacy policy of B .King's Firearms, Training and Retail LLC, which governs personal information gathered on its Internet site, www.bkingsfirearms.com, in general and other registration forms related to training classes and store purchased offered by B .King's Firearms, Training and Retail LLC, as may be included on our Internet site, specifically.

Commitment to Online Security:

Physical, electronic and managerial procedures have been employed to safeguard the security and integrity of all personal information. B .King's Firearms, Training and Retail LLC encrypts billing information wherever such information is requested. No agents or contractors of B .King's Firearms, Training and Retail LLC have access to personal information obtained on the B .King's Firearms, Training and Retail LLC Web site.

Personal information that B .King's Firearms, Training and Retail LLC may collect online:

B .King's Firearms, Training and Retail LLC collects personal information online, including, but not limited to, names, birth dates, driver’s license (or State issued identification) numbers, postal and e-mail addresses, phone numbers, and billing information. B .King's Firearms, Training and Retail LLC does not knowingly collect or maintain any personal information from children under the age of 17. In addition, no parts of our sites are designed with the purpose of attracting any person under the age of 17.

How B .King's Firearms, Training and Retail LLC Uses Personal Information Collected Online:

Unless you otherwise consent, we will use your personal information only for the purpose for which it is submitted, such as to reply to your emails and process billing requests related to services and products to which we provide.

At certain points where personal information is collected on our site, there may be a box where you may indicate you would like to be on a mailing list to receive information about B .King's Firearms, Training and Retail LLCother programs and services and articles of interest relating to firearms, shooting, or general products. At any time you can add or remove your name from a B .King's Firearms, Training and Retail LLClist by contacting us at:

[email protected]
Subject: unsubscribe

How Your Information May Be Shared:

We never sell or rent your personal information. B .King's Firearms, Training and Retail LLCmay, however, release personal information under the following circumstances:

Where release is required by law (for example, a subpoena) or regulation or is requested by a government agency;

Where our records indicate an individual may be engaged in fraudulent activity or other deceptive practices that a governmental agency should be made aware of;

To appropriate persons, where your communication suggests possible harm to others.

Computer Tracking and Cookies:

Our Web sites are not set up to track, collect or distribute personal information not entered by visitors. Our site logs do generate certain kinds of non-identifying site usage data, such as the number of hits and visits to our sites. This information is used for internal purposes by technical support staff to provide better services to the public and may also be provided to others, but again, the statistics contain no personal information and cannot be used to gather such information.

Problems or Complaints with B .King's Firearms, Training and Retail LLC Privacy Policy:

If you have a concern or complaint about B .King's Firearms, Training and Retail LLC compliance with this privacy policy, please direct it to [email protected].

RETURN POLICY:

There is a restocking fee of 8% if the order is cancelled and refunded to your CC or we can offer 100% in store credit. Once the item has left our store the restocking fee is 15%. For Refund you must pay the shipping back. Item's that are not 100% same condition will be reviewed by the Owner for refund % if we accept the return.

Our products are covered by manufactures warranties 100%, with that being said if we find you have a manufactures defect with your product you would contact them directly for repair or replacement. You have 7 days from when the product is delivered to your door or picked up from your FFL to report any defects or problems to us. IE...We will not except a return if you report a tiny scratch when your order was delivered two months earlier...

There will be a 30% restocking fee on all controlled items returned because of failed background checks.