Lower Parts

AR Lower Receiver Parts (Less Trigger, Hammer, Disconnector, Pistol Grip Assembly and Trigger Guard)

$34.95
This lower parts kit comes with the basic necessities to complete a lower receiver and is assembled for those who already have an aftermarket trigger group, grip and trigger guard. Every part is cast and machined to MILSPEC standards. If you need a grip and/or trigger guard to complete your lower, we also have the option of adding our own Strike Industries pistol grips and Cobra Trigger Guards.

Strike Switch

Starting at: $65.95

Ergonomic, intuitive, and fast. The Strike Switch is a patent pending modular safety selector designed from inception using human factor considerations to aid positive on safe, on fire manipulations. The unique toggle action allows one to quickly engage the safety when moving positions without altering the firing grip.

AR-15 Lower Receiver Takedown Pin

Starting at: $3.00

Strike Industries take down and pivot pins are an essential addition to your spare/replacement parts inventory. Sturdy and reliable pivot and take down pins are best when you don’t have to worry about durability issues. Made with high quality materials and finished with a matte black coating, our pins are a great value. If you need the parts to keep your AR in top shape, look no further that S.I.

HEX Selector Switch 60/90 degree 3 in 1

$34.95
With customization and economy of effort in mind, the 60/90 AMBI allows the end user the choice of selector switch degree to suit their personal shooting style. Whether you prefer short throw or a conventional selector switch lever; the SI 60/90 allows for easy configuration for strong side only or bilateral weapons manipulations.

M4 AR15 Fang Series Trigger Guard

Starting at: $10.50

If you’ve ever wanted faster and reliable magazine reloads, practice makes perfect. You aren’t gonna be a superstar overnight. But a little help never hurts. This is why Strike Industries has developed the Fang Trigger Guard. Out trigger guard has a stubby magazine assist “fang” that protrudes to allow with quicker and more accurate reload insertion of the magazine. The Fang Trigger Guard is made of high quality polymer and is light weight with a great look and feel that is only matched with its performance. The fang will help guide your magazine into the magwell on a much more dependable basis. It’s a simple, helpful guide that can be used from the beginner to the more advanced. You have to get the feel for the timing and mechanics of a quick and clean reload, getting a competitive edge is just the smart thing to do. Try the Strike Industries Fang Trigger Guard and bite back against failed reload attempts.

M4/AR15 Cobra Series Trigger Guard (Ambi+Left)

Starting at: $4.00

COBRA Ambidextrous / Left only Polymer Trigger Guard Combo – 2 Pack - Model - COBRA-01-AL
Cobra series trigger guards are designed as direct replacements to the standard AR trigger guard. Our trigger guards feature a deeper angle rather than a straight linear line. This gives the operator more room when wearing gloves and for cold weather environments. Also eliminates the dreaded gap between the pistol grip and trigger guard.

M4/AR15 Cobra Series Trigger Guard (Straight+Right)

Starting at: $10.50

COBRA Straight / Right only Polymer Trigger Guard Combo – 2 Pack - Model - COBRA-02-SR
Cobra series trigger guards are designed as direct replacements to the standard AR trigger guard. Our trigger guards feature a deeper angle rather than a straight linear line. This gives the operator more room when wearing gloves and for cold weather environments. Also eliminates the dreaded gap between the pistol grip and trigger guard.

Strike Industries Enhanced Magazine Catch

Starting at: $10.95

The SI Enhanced Magazine Catch is another piece in our line of high quality parts for the AR. Its solid construction and clean matte black finish make it a great looking replacement or build project part. It’s a great value for an essential item. If you need the parts to keep your AR in top shape, look no further than S.I.

SI Extended Pivot / Takedown Pins

Starting at: $13.95

Strike industries extended takedown pins and pivot pins are ideal for shooters looking for a custom look and that run multiple upper receivers off of a single lower. Made out of Precision-Machined Steel.  This is a replacement for the standard AR15/M16/M4 takedown pins and fits most of AR standard and billet receivers.

AR Lower Receiver Parts with Trigger, Hammer and Disconnector

$49.95
The AR-LRPTH comes with all small parts required to complete a lower receiver, except for a trigger guard and pistol grip. This lower parts kit is designed to produce a repeatable 5.5-6 lbs of trigger pull. Every part is machined to MILSPEC standards. If you need a grip and/or trigger guard to complete your lower, we also have the option of adding our own Strike Industries pistol grips and Cobra Trigger Guards.

Enhanced Bolt Catch

$13.95
The SI Enhanced Bolt Catch is another piece in our line of high quality parts for the AR15. The SI AR-EBC features an extra wide bolt catch lever surface making its operation effortless. Its solid construction and clean matte black finish make it a great looking replacement or build project. It’s a great value for an essential item. If you need the parts to keep your AR in top shape, look no further than S.I.

AR-15 Lower Receiver Pin Kit PRO kit

$140.00
The Strike Industries pin kit is a valuable addition to your spare/replacement parts inventory. This kit is comprised of several important lower pins and detents. The kit contains takedown and pivot pins, takedown and pivot pin detents, hammer and trigger pins, selector detents, trigger guard roll pins, bolt catch roll pins and bolt catch plungers. If you're looking to assemble some stripped lower receivers or to replace worn out pins and detents, get your pin kit today!

M4 AR-15 Lower Receiver Spring Kit 20 Piece Gunsmith Box

$80.00
The Strike Industries AR-15 lower Receiver spring replacement kit includes 9 important springs that are commonly replaced or easily lost when building stripped AR-15 lower receivers. The 9-Piece kit includes springs for the bolt catch, disconnector, buffer retainer, trigger, hammer, magazine catch, selector, and two detents.

M4 AR-15 Lower Receiver Spring Kit

$8.00
The Strike Industries AR-15 lower Receiver spring replacement kit includes 9 important springs that are commonly replaced or easily lost when building stripped AR-15 lower receivers. The 9-Piece kit includes springs for the bolt catch, disconnector, buffer retainer, trigger, hammer, magazine catch, selector, and two detents.

AR Trigger Hammer Jig

$39.95
This easy to use apparatus allows full assembly and testing of any AR-15 trigger set up prior to installation on your rifle. The AR15 Trigger Jig allows you to clearly see the sear, hammer, and disconnector engagement points while under normal spring tension.

AR-15 Lower Receiver Pin Kit

$12.00

The Strike Industries pin kit is a valuable addition to your spare/replacement parts inventory. This kit is comprised of several important lower pins and detents. The kit contains takedown and pivot pins, takedown and pivot pin detents, hammer and trigger pins, selector detents, trigger guard roll pins, bolt catch roll pins and bolt catch plungers. If you're looking to assemble some stripped lower receivers or to replace worn out pins and detents, get your pin kit today! 

Bolt Catch

$9.95
The SI Bolt Catch is another piece in our line of high quality standard part for the AR. Its solid construction and clean matte black finish make it a great looking replacement or build project part. It’s a great value for an essential item. If you need the parts to keep your AR in top shape, look no further that S.I.