Freedom To Boom Deals Extended!
12% Off Almost Everything w/ Code: FREEDOM12 Or Free Shipping On $99+ w/ Code: 99FREESHIP

Freedom To Boom Savings Extended!
12% Off Almost Everything w/ Code: FREEDOM12 or Free Shipping On $99+ w/ Code: 99FREESHIP

Daily Deal: Halo Optics K2000 10x42 Rangefinder Binoculars $349.99 $299.99- Get Yours!

Lower Parts Kit Mil-Spec
Lower Parts Kit Mil-Spec
Lower Parts Kit Mil-Spec
Lower Parts Kit Mil-Spec
None
Sale Sale OFF

GEISSELE AUTOMATICS LLC - Lower Parts Kit Mil-Spec

29 Reviews
Lower Parts Kit Mil-Spec
Brownells #
100025740
MFR #
05-343
UPC
817953025277
$49.99 $62.00
Coupon Code
Purchase Limit Help

Out of Stock

NOTIFY ME WHEN IT'S BACK IN STOCK
Can we ship this to you? (US only)
{{restriction.odmShipCheckMessage}}

How To Buy Guns Online

International purchase information

Specifications
Item Width (Inches):
0.670
Item Weight (lbs):
0.250
Item Length (Inches):
2.300
Item Height (Inches):
0.430
Make Model Fit:
AR-15.Universal
Restriction
Gun Part Restrictions:
Yes
View US State Restrictions
Can we ship this to you? (US only)
{{restriction.odmShipCheckMessage}}

How To Buy Guns Online

International purchase information

What is the GEISSELE AUTOMATICS LLC - Lower Parts Kit Mil-Spec?

The Geissele AR-15 Lower Parts Kit contains all 17 parts necessary to get your lower receiver operational - minus the trigger and pistol grip. Geissele is renowned for superbly designed, meticulously manufactured products, and these parts meet their high standards. Items in the AR-15 Lower Parts Kit are manufactured to "mil-spec" (M16 / M4) dimensions to ensure optimum fit and function in your AR rifle or carbine. The Geissele AR-15 Lower Parts Kit includes:

  • Bolt catch
  • Bolt catch plunger / spring / roll pin
  • Mag release
  • Mag release button
  • Mag release spring
  • Buffer retainer spring
  • Safety
  • Buffer retainer
  • Safety detent & spring
  • Triggerguard & roll pin
  • Takedown detents & springs
  • Pivot / takedown pins

The fire control system - trigger, hammer, disconnector (and pins) - may be the most "personal" part of any custom AR-15. Along with the pistol grip, it’s the area most customizers and custom builders prefer to select very carefully. As a result Geissele omits both components from this AR-15 Lower Parts Kit so you don’t have to spend money on parts you won’t use!

See all of our AR15s and AR15 parts here.

Gun Part Restriction
Gun Parts have restricted shipping to CA.

Please select a FFL Dealer
or
7 dealers near
Distance:
10miles
arrow-down
Sort by:
Nearest first
arrow-down
pin wrong
No dealers found

Please search by another zipcode to find the nearest dealer.

Close
Brownells Retail Store
Phone Call
Pin in
Clock
You must select required check box

Note:

Listed hours & fees are not guaranteed and subject to change. Please contact the dealer to confirm current hours & fees.
* Must accept required fields.
  • Pin in Brownells Featured Dealers

    Choosing a Brownells Featured Dealer is the fastest and easiest way to complete your purchase. Brownells Featured Dealers have agreed to perform FFL transfers on guns purchased online from Brownells. We have their necessary FFL information on file and your FFL order will ship directly to them once processed.

  • Pin in Standard Dealers

    Standard Dealers have not yet agreed to perform FFL transfers on guns purchased online from Brownells. If you choose a Standard Dealer, you are responsible for contacting that dealer and arranging for the dealer to submit a signed copy of an FFL and to give Brownells permission to ship the gun.

  • Pin in Not Available Dealers

    Not Available Dealers are dealers Brownells cannot ship guns to at this time. These dealers either do not meet our requirements for FFL transfers, or prefer to not perform transfers for guns purchased online from Brownells.

Switch view map
7 dealers near

Alternative products

Left Badge
Right Badge OFF  
5 Stars

200

300

Add on

Left Badge
Right Badge OFF  
5 Stars

200

300

AR-15 LOWER PARTS KIT REVIEWS

3.5
29 Reviews
5 Stars
41%
4 Stars
10%
3 Stars
24%
2 Stars
3%
1 Stars
21%
Reviews Summary
The AR-15 Lower Parts Kit receives mixed reviews, with many appreciating its affordability and quality when well-speced. However, numerous users report issues with oversized roll pins and out-of-spec parts, leading to installation difficulties. While some find a perfect fit, others express disappointment, suggesting inconsistency in the quality control of the product.
What Reviewers Are Saying
Product Quality
65%
Many reviewers highlight variability in the product quality, with some asserting that parts meet or exceed mil-spec standards. However, others experienced parts that were out of specification, particularly regarding the roll pins and the magazine catch, leading to installation issues and functional failures. This theme has a significant split in perception among users.
Installation Issues
70%
A recurrent theme in the reviews is the difficulty of proper installation due to oversized or defective roll pins, which some users struggled to install without damaging their receivers. This has led to frustration and a sense of disappointment, with various users suggesting the need for additional tools or sourcing other parts.
Affordability
50%
Several customers appreciate the lower price point of the kit relative to competitors, viewing it as a reasonable option for basic builds. Despite some criticisms, those who had no installation issues often affirm its value for money, suggesting that it serves well when the parts are correctly within spec.
Inconsistency in Performance
60%
Some reviews illustrate that experience with this kit can vary widely depending on the individual components included in each kit. Users report inconsistencies such as parts fitting perfectly while others face significant issues, indicating potential problems with quality assurance in production.
Brand Reputation vs. Reality
40%
A few reviewers express disappointment in Geissele's brand reputation not aligning with their experience with this kit, citing issues that contrast with their previously positive experiences with other Geissele products. This theme sheds light on customer expectations based on brand history versus actual product performance.
5
Great lower parts kit
I like to add my own trigger group and grip, so this parts kit was perfect. Everything I needed was there. Good quality parts. Will definitely order again if needed, The price was really reasonable as well. .
by Howard Gates on December 16, 2023
Verified Purchase
Was this review helpful? 0
5
Quality fit.
Any lesser review was likely written by inexperienced laypersons not adept at the skill sets required for installation. Perfect fit in any true Mil-spec quality lower. SOLGW receiver functions flawlessly. Have the right tools and punches and know what you’re doing and there’s zero problem. Perfect kit.
by JP on November 26, 2023
Was this review helpful? 2
5
Exact same from Geissele
Ordered two of these kits direct from Geissele when they had them in stock, then ordered some here at Brownells when they were in stock. Exact same, fit in the Aero lowers and fit in the Geissele lower I had no problem. Everything fit great. Not sure why all the bad reviews. For $50 I will be buying more to have on hand.
by Hithere on August 27, 2020
Was this review helpful? 1
5
All lower parts needed.
All the parts fit correctly.
by jlt36 on August 25, 2020
Was this review helpful? 1
5
Bought two, both were perfect.
Im surprised by some of the negative reviews. Mine were both perfect and went together with no issues. Particularly the roll pins, these were some of the easiest Ive driven in. No marring of the lower.
by Vegas on August 24, 2020
Was this review helpful? 0
View All 29 Reviews
Customer Questions
18 Questions