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 46 results

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BKF M16A2 Complete CQB Lower Receiver – Black Anodized
Original price was: $228.86.Current price is: $148.76.
22 In stock
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BKF M16A2 Complete Lower Receiver – Black Anodized
Original price was: $230.16.Current price is: $149.60.
22 In stock
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BKF AR15 Pistol Complete Mil-Spec Lower Receiver – No Stock (Pistol Buffer Tube Only)
Original price was: $215.56.Current price is: $172.45. UPC: 810124542726
17 In stock
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BKF AR15 Complete Lower Receiver – Anodized (No Logo)
Rated 4.75 out of 5
Original price was: $233.36.Current price is: $186.69. UPC: 810124542672
22 In stock
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BKF AR15 Complete MOE Lower Receiver – No Stock (No Logo)
Rated 5.00 out of 5
Original price was: $239.08.Current price is: $191.26. UPC: 810124542719
22 In stock
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BKF AR15 Pistol Complete MOE Lower Receiver – No Stock (Pistol Buffer Tube Only)
Original price was: $239.08.Current price is: $191.26. UPC: 810124542412
17 In stock
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BKF M16A2 Complete Rifle Lower Receiver – Black Anodized
Original price was: $294.58.Current price is: $191.48.
3 In stock
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BKF M4 MOD-0 Standard Power Complete Lower Receiver – No Stock
Rated 4.88 out of 5
Original price was: $283.54.Current price is: $226.83. UPC: 810124542887
22 In stock
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BKF AR15 Complete Sopmod Lower Receiver – (No Logo)
Rated 5.00 out of 5
Original price was: $289.70.Current price is: $231.76.
22 In stock
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BKF M4 MOD-0 Intermediate Power Complete Lower Receiver (H1) – No Stock
Original price was: $295.54.Current price is: $236.43. UPC: 810124542924
22 In stock
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BKF AR15 Complete Rifle Lower Receiver – (No Logo)
Original price was: $297.78.Current price is: $238.22.
3 In stock
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BKF AR15 Complete MOE Lower Receiver – (No Logo)
Original price was: $298.60.Current price is: $238.88. UPC: 810124542917
22 In stock
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BKF AR15 Accent Kit Complete Lower Receiver – FDE Cerakote
Original price was: $312.72.Current price is: $250.18.
Out Of Stock
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BKF AR15 Accent Kit Complete Lower Receiver – Sniper Grey Cerakote
Original price was: $312.72.Current price is: $250.18.
Out Of Stock
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BKF AR15 Accent Kit Complete Lower Receiver – Gold Cerakote
Original price was: $312.72.Current price is: $250.18.
Out Of Stock
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BKF AR15 Accent Kit Complete Lower Receiver – OD Green Cerakote
Original price was: $312.72.Current price is: $250.18.
Out Of Stock
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BKF AR15 Accent Kit Complete Lower Receiver – Burnt Bronze Cerakote
Original price was: $312.72.Current price is: $250.18.
Out Of Stock
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BKF AR15 Accent Kit Complete Lower Receiver – Orange Cerakote
Original price was: $312.72.Current price is: $250.18.
Out Of Stock
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BKF AR15 Accent Kit Complete Lower Receiver – Midnight Bronze Cerakote
Original price was: $312.72.Current price is: $250.18.
Out Of Stock
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BKF AR15 Accent Kit Complete Lower Receiver – Tungsten Cerakote
Original price was: $312.72.Current price is: $250.18.
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BKF AR15 Accent Kit Complete Lower Receiver – Northern Lights Cerakote
Original price was: $312.72.Current price is: $250.18.
Out Of Stock
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BKF AR15 Accent Kit Complete Lower Receiver – Robins Egg Blue Cerakote
Original price was: $312.72.Current price is: $250.18.
Out Of Stock
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BKF AR15 Accent Kit Complete Lower Receiver – Purple Cerakote
Original price was: $312.72.Current price is: $250.18.
Out Of Stock
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BKF AR15 Accent Kit Complete Lower Receiver – Zombie Green Cerakote
Original price was: $312.72.Current price is: $250.18.
Out Of Stock
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BKF AR15 Accent Kit Complete Lower Receiver – Red Cerakote
Original price was: $312.72.Current price is: $250.18.
Out Of Stock
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BKF AR15 Accent Kit Complete Lower Receiver – Pink Cerakote
Original price was: $312.72.Current price is: $250.18.
Out Of Stock
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BKF AR15 Accent Kit Complete Lower Receiver – NRA Blue Cerakote
Original price was: $312.72.Current price is: $250.18.
Out Of Stock
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BKF AR15 Complete SBA3 Lower Receiver – Anodized
Original price was: $333.56.Current price is: $266.85.
Out Of Stock
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BKF M4 MOD-0 Extra Power Complete Lower Receiver (H2) – No Stock
Original price was: $333.82.Current price is: $267.06. UPC: 810124543068
22 In stock
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BKF AR15 Complete MOE Rifle Lower Receiver – (No Logo)
Original price was: $344.44.Current price is: $275.55. UPC: 810124543143
22 In stock
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BKF M4 MOD-0 Intermediate Power Complete SL Lower Receiver – Anodized
Original price was: $381.54.Current price is: $305.23. UPC: 810124543150
51 In stock
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BKF AR15 Accent Kit Complete Lower Receiver – Bazooka Green Cerakote
$312.72
Out Of Stock
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BKF M4 MOD-0 Standard Power Complete SL-S Lower Receiver – Anodized
Original price was: $396.04.Current price is: $316.83. UPC: 810124543198
22 In stock
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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
Original price was: $406.40.Current price is: $325.12.
77 In stock
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BKF M4 MOD-0 Intermediate Power Complete SL-S Lower Receiver – Anodized
Original price was: $408.04.Current price is: $326.43. UPC: 810124543204
22 In stock
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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
Original price was: $418.40.Current price is: $334.72.
82 In stock
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BKF M4 MOD-0 Extra Power (H2) Complete Lower Receiver W/ 4.5lb Two Stage Combat Control Kit – No Stock
Rated 5.00 out of 5
Original price was: $432.40.Current price is: $345.92.
65 In stock
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BKF M4 MOD-0 A5H Lower Receiver W/ 4.5lb Two Stage Combat Control Kit – No Stock
Original price was: $436.24.Current price is: $348.99.
48 In stock
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BKF M4 MOD-0 A5H1 Lower Receiver W/ 4.5lb Two Stage Combat Control Kit – No Stock
Original price was: $448.24.Current price is: $358.59.
48 In stock
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BKF M4 MOD-0 A5H2 Lower Receiver W/ 4.5lb Two Stage Combat Control Kit – No Stock
Original price was: $456.84.Current price is: $365.47.
21 In stock
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BKF M4 MOD-0 A5H3 Lower Receiver W/ 4.5lb Two Stage Combat Control Kit – No Stock
Original price was: $465.84.Current price is: $372.67.
48 In stock
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BKF M4 MOD-0 Standard Power Complete Moe Rifle Lower Receiver W/ 4.5lb Two Stage Combat Control Kit
Original price was: $503.74.Current price is: $402.99.
24 In stock
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Save $103.78
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BKF M4 MOD-0 Standard Power Complete SL-S Lower Receiver W/ 4.5lb Two Stage Combat Control Kit
Original price was: $518.90.Current price is: $415.12.
77 In stock
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Save $106.18
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10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-0 Intermediate Power (H1) Complete SL-S Lower Receiver W/ 4.5lb Two Stage Combat Control Kit
Original price was: $530.90.Current price is: $424.72.
82 In stock
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Save $108.98
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10% off any AR15 Complete Lower and AR15 Barrel when purchased together
BKF M4 MOD-0 Extra Power (H2) Complete SL-S Lower Receiver W/ 4.5lb Two Stage Combat Control Kit
Original price was: $544.90.Current price is: $435.92.
65 In stock
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Save $151.06
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BKF M4 MOD-0 Standard Power Complete PRS Rifle Lower Receiver W/ 4.5lb Two Stage Combat Control Kit
Original price was: $755.30.Current price is: $604.24.
10 In stock
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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 is a registered business in state of Ohio. What follows is the online privacy policy of B. King's Firearms, 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, 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 encrypts billing information wherever such information is requested. No agents or contractors of B. King's Firearms have access to personal information obtained on the B. King's Firearms Web site.

Personal information that B. King's Firearms may collect online:

B. King's Firearms 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 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 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 other 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 list 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 may, 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 Privacy Policy:

If you have a concern or complaint about B. King's Firearms 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.